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Question
Find the value of x in each of the following proportions:
51 : 85 : : 57 : x
Sum
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Solution
51 : 85 : : 57 : x
Product of extremes = Product of means
51 × x = 85 × 57
⇒ 51x = 4845
⇒ x = `4845/51` = 95
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