The required return for Mosby, Inc.'s stock, given the dividend payment of $2.70 per share, a growth rate of 6.75%, and a current stock price of $49.00, is calculated using the Gordon Growth Model and is found to be 12.26%.
The student is asking about the required return on a stock given the dividend payment, the growth rate of the dividends, and the current stock price. To calculate the required return, the Gordon Growth Model (also known as the Dividend Discount Model) can be utilized, which is given by the formula:

Required Return = (Next Dividend Payment / Current Stock Price) + Growth Rate

By substituting the given values into the formula:
Required Return = ($2.70 / $49.00) + 6.75%
The calculation will be:
Required Return = 0.0551 + 0.0675 = 0.1226 or 12.26%
Therefore, the required return for Mosby, Inc.'s stock is 12.26.