Consider the following spot interest rates for maturities of one, two, three, and four years. r1 = 6.2% r2 = 6.7% r3 = 7.4% r4 = 8.2% What are the following forward rates, where f1, k refers to a forward rate for the period beginning in one year and extending for k years? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) f1,1 7.20% f1,2 ?% f1,3 ?%