Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is rel...
Question
Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 45 : 56 :: 62 : 73 :: 19 : ? (Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)