Microsoft Corporation has the following financial data for the fiscal year ending June 30, 2024:

• Total assets: $250,000,000
• Total liabilities: $150,000,000
• Total equity: $100,000,000
• Net income: $40,000,000
• Sales revenue: $200,000,000
• Cost of goods sold: $120,000,000
• Operating expenses: $40,000,000
• Interest expense: $6,000,000
• Income tax expense: $8,000,000

Calculate the following ratios for Microsoft Corporation for the fiscal year ending June 30, 2024:

1. Current ratio
2. Debt-to-equity ratio
3. Gross margin ratio
4. Net profit margin ratio