Facebook, Inc. provided the following financial data for the quarter ending March 31, 2024:

• Total assets: $90,000,000
• Total liabilities: $54,000,000
• Total equity: $36,000,000
• Net income: $15,000,000
• Sales revenue: $75,000,000
• Cost of goods sold: $45,000,000
• Operating expenses: $15,000,000
• Interest expense: $1,500,000
• Income tax expense: $3,000,000

Calculate the following ratios for Facebook, Inc. for the quarter ending March 31, 2024:

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