SOLUTION: write the sentence as a proportion then determine whether the proportion is a true proportion two is to four as five is to ten

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Question 979527: write the sentence as a proportion then determine whether the proportion is a true
proportion two is to four as five is to ten
Answer by Edwin McCravy(20056) About Me  (Show Source):
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2:4 = 5:10

Multiply the outers (the "extremes": 2*10 = 20
Multiply the inners (the "means"): 4*5 = 20

Ther are the same, so the proportion is true.

Edwin