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Sumario Pensamiento Lógico

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Resumen del curso de pensamiento lógico (Matemática).

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PROPORCIONALIDAD: MAGNITUDES
PROPORCIONALES Y REPARTO PROPORCIONAL
Conceptos
 ¿Qué es una razón?: Es el resultado de comparar dos
cantidades.
- Por diferencia. – Hallando en cuanto excede una o la otra.
(resta)
- Por cociente. – Hallando cuantas veces contiene una a la otra.
(división)
 ¿Qué es una proporción?: Es el resultado de comparar dos
razones.
- Proporción aritmética. – Es la igualdad de dos razones
aritméticas. (a-b=c-d)
- Proporción geométrica. - Es la igualdad de dos razones
geométricas. (a/b=c/d)
 ¿Qué es una magnitud?: Es aquella propiedad que puede variar
y puede ser medido, y ser expresado en forma cuantitativa.
Magnitudes proporcionales
 Dos magnitudes son proporcionales, si al variar los valores de una
de ellos, los valores correspondientes de la otra, también varían
proporcionalmente.
 Magnitudes directamente proporcionales (D.P): Aumenten o
disminuyen los dos valores proporcionalmente. (a D.P b = a/b = k)
 Magnitudes inversamente proporcionales (I.P): Un valor
aumenta y el otro disminuye proporcionalmente. (a I.P b = a.b = k)
Reparto proporcional
 Consiste en repartir o dividir cierta cantidad en forma proporcional
a determinados factores o números.
 Reparto proporcional simple:
- Directo. - Cuando el reparto se distribuye proporcionalmente a
cada índice de reparto.
P 1 P2 P 3
= = =k P1+P2+P3+……+Pn=C
i1 i2 i3

Donde: C= Total, K= constante de reparto
- Inverso. – Cuando el reparto se distribuye inversamente a cada
índice de reparto.
P 1× i 1=P 2 ×i2=P3 × i3 P1+P2+P3+….+Pn= C

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Uploaded on
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Number of pages
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Written in
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Type
SUMMARY

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