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How do you work a proportional problem?

Updated: 8/20/2019
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Wiki User

11y ago

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The product of the means equals the product of the extremes. In other words, if A is to B as C is to D, then B times C equals A times D, so...

A = B x C ÷ D

B = A x D ÷ C

C = A x D ÷ B

D = B x C ÷ A

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11y ago
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