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Finding the Fourth Proportional to 76,991.91, 115,490.30 and 24,401.85

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Solution

The fourth proportional to 76,991.91, 115,490.30 and 24,401.85 is: 36,603.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,991.91 : 115,490.30 = 24,401.85 : x
  2. Step 2: Convert to fraction form
    76,991.91/115,490.30 = 24,401.85/x
  3. Step 3: Cross multiply
    76,991.91x = 115,490.30 × 24,401.85
  4. Step 4: Simplify right side
    76,991.91x = 2,818,176,855.05
  5. Step 5: Solve for x
    x = 2,818,176,855.05/76,991.91
  6. Step 6: Final answer
    x = 36,603.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.