Question

find the value of x in the following proportion 3:7::x:21​

Answer 1

Answer:

9    is the answer

Step-by-step explanation:

Answer 2

Answer:

9

Step-by-step explanation:

7 x X = 21 x 3

X = 21 x 3

7

X = 9

check:

7 x 9 = 21 x 3

63 = 63

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