d Item Number of returns Taxable income Under $15,000 39,269,402 Total tax liability Average tax rate* $ 6,938,229 $ 777,332 $15,000 to under $30,000 27,369,909 $ 192,881,768 $ 14,769,011 11.20% 7.66% *The average tax rate is total tax liability divided by taxable income. Required: $30,000 to under $50,000 $50,000 to under $100,000 27,138,637 $ 604,264,808 $ 50,115,871 34,436,449 $ 1,753,557,416 $ 186,008,777 8.29% 10.61% $100,000 to under $200,000 20,908,838 $ 2,304,350,171 $317,634,367 a. If the federal tax system was changed to a proportional tax rate structure with a tax rate of 17%, calculate the amount of tax liability for 2021 for all taxpayers. k b. What is the amount and nature of difference from actual tax liability specified in the above table? ht ences C ra 19 Required a Required b If the federal tax system was changed to a proportional tax rate structure with a tax rate of 17%, calculate the amount of tax liability for 2019 for all taxpayers. Note: Consider intermediate computations and final answer in thousands of dollars, rounded to the nearest whole number. Amount of tax liability be here to search Required b 72F Sunny 13.78% < 12:00 PM 3/26/2023