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Finding the Fourth Proportional to 100,791.73, 151,320.44 and 58,710.61

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Solution

The fourth proportional to 100,791.73, 151,320.44 and 58,710.61 is: 88,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,791.73 : 151,320.44 = 58,710.61 : x
  2. Step 2: Convert to fraction form
    100,791.73/151,320.44 = 58,710.61/x
  3. Step 3: Cross multiply
    100,791.73x = 151,320.44 × 58,710.61
  4. Step 4: Simplify right side
    100,791.73x = 8,884,115,337.87
  5. Step 5: Solve for x
    x = 8,884,115,337.87/100,791.73
  6. Step 6: Final answer
    x = 88,143.30

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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.