; (IV) for the fiscal quarter beginning on October 1, 2020, a percentage equal to the enhanced FMAP applicable to the State reduced by a number of percentage points equal to 2/3 of the percentage points difference between the enhanced FMAP applicable to the State and the Federal medical assistance percentage applicable to the State under section 1905(b) of the Social Security Act ( 42 U.S.C. 1396d(b) ); (V) for the fiscal quarter beginning on January 1, 2021, a percentage equal to the enhanced FMAP applicable to the State reduced by a number of percentage points equal to 5/6 of the percentage points difference between the enhanced FMAP applicable to the State and the Federal medical assistance percentage applicable to the State under section 1905(b) of the Social Security Act ( 42 U.S.C. 1396d(b) )