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Finding the Fourth Proportional to 76,493.20, 114,695.24 and 29,691.40

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Solution

The fourth proportional to 76,493.20, 114,695.24 and 29,691.40 is: 44,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,493.20 : 114,695.24 = 29,691.40 : x
  2. Step 2: Convert to fraction form
    76,493.20/114,695.24 = 29,691.40/x
  3. Step 3: Cross multiply
    76,493.20x = 114,695.24 × 29,691.40
  4. Step 4: Simplify right side
    76,493.20x = 3,405,462,248.94
  5. Step 5: Solve for x
    x = 3,405,462,248.94/76,493.20
  6. Step 6: Final answer
    x = 44,519.80

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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.