There are infinitely many. They are any ratios of the form 47*k : k where k is an integer.
yes
30 : 40 and 33 : 44 are two possible equivalent ratios.
3 equivalent ratios for 4:8 are 75:150, 50:100 and 3:6
No, they are not.
It is: 1/3 = 2/6
30/110 and 3030/1111 are two equivalent ratios.
4 ratios equivalent to 75% are....3/4, .75, 3/40, AND 7.5
It is: 1 to 3
It is: 8 to 3
no they are not
3 to 4