20000000:600000

To express the ratio 20,000,000:600,000 in its simplest form, we can divide both numbers by their greatest common divisor (GCD).

The GCD of 20,000,000 and 600,000 is 200,000.

Dividing both numbers by 200,000, we get: 20,000,000 ÷ 200,000 = 100 600,000 ÷ 200,000 = 3

Therefore, the simplest form of the ratio 20,000,000:600,000 is 100:3.