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2:3=6:9

6x3=18

2x9=18

Another.

4:3=8:n

8x3=24

4xn=?

4n=24

n=24

=4

24÷4=6

4:3=8:6

6x3=18

2x9=18

Another.

4:3=8:n

8x3=24

4xn=?

4n=24

n=24

=4

24÷4=6

4:3=8:6

4:5 has the sum of 45 what are the ratios?

To have the answer, simply add the numbers 4 and 5 which is equal to 9 and divide it to 45 which is equal to 5 then multiply 4 and 5 to 5 which is equal to 20 and 25 therefore, 4:5=20:25, 20 and 25 has a sum of 45

That's one of the example of Partitive Proportion