Question

Find the missing number so that, 2, 12, 7, _____ are in proportion.Required to answer. Single choice.
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Answer 1

Step-by-step explanation:

2:12::7:x

2×x=12×7

2x=84

x=42

Answer 2

Answer:

2/12=7/x

2x=84

X=84/2

x=42