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Finding the Fourth Proportional to 76,599.52, 114,933.46 and 39,139.88

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Solution

The fourth proportional to 76,599.52, 114,933.46 and 39,139.88 is: 58,727.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,599.52 : 114,933.46 = 39,139.88 : x
  2. Step 2: Convert to fraction form
    76,599.52/114,933.46 = 39,139.88/x
  3. Step 3: Cross multiply
    76,599.52x = 114,933.46 × 39,139.88
  4. Step 4: Simplify right side
    76,599.52x = 4,498,481,832.38
  5. Step 5: Solve for x
    x = 4,498,481,832.38/76,599.52
  6. Step 6: Final answer
    x = 58,727.28

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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.