Question

find the missing number in following proportion

120:80=90:x
150:300=x:120
25:x=75:12​

Answer 1

Answer:

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Answer 2

Answer:

120:80=90:x(60)

80×90= 7200

7200/120= 60

150:300=x(60):120

150×120=18000

18000/300=60

25:x(4)=75:12

25×12=300

300/75=4