Respuesta :
18 : 78 = 12 : x
x = (78 * 12) : 18
x = 936 : 18
x = 52
52 is your answer
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18 : 78 = 12 : 52
0.23 = 0.23
the answer is good
18 : 78 = 12 : x
x = (78 * 12) : 18
x = 936 : 18
x = 52
52 is your answer
------------------------------
18 : 78 = 12 : 52
0.23 = 0.23
the answer is good