Question

(c) X: 3 :: 57 : 19​

Answer 1

Answer:

x is equal to 9.

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Answer 2

Answer:

(c) X: 3 :: 57 : 19

product of extremes = Product of means

x × 19 = 3 × 57

19x = 171

x = 171/19

X = 9

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