Quantitative Problem: You are holding a portfolio with the following investments and betas: Stock Dollar investment Beta A $300,000 1.35 B 150,000 1.50 C 300,000 0.75 D 250,000 -0.25 Total investment $1,000,000 The market's required return is 9% and the risk-free rate is 4%. What is the portfolio's required return? Do not round intermediate calculations. Round your answer to three decimal places.