Profitability ratio, which measures the accounting rate of return on Total Assets (v2490), is calculated as: ((v1700.00) + (v1420.00)) - ((v3220.00) + (v1410.00))

(v2490.00)

where:

(v1700.00) Income After Taxes

(v1420.00) Total Interest Expense

(v3220.00) Interest Tax Shield

(v1410.00) Interest Capitalized

(v2490.00) Total Assets

These ratios have limitations: they are based on historical costs, do not incorporate risk or the time value of money, and can be greatly affected by alternative accounting conventions.