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Finding the Fourth Proportional to 52,390.87, 78,587.12 and 29,164.93

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Solution

The fourth proportional to 52,390.87, 78,587.12 and 29,164.93 is: 43,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,390.87 : 78,587.12 = 29,164.93 : x
  2. Step 2: Convert to fraction form
    52,390.87/78,587.12 = 29,164.93/x
  3. Step 3: Cross multiply
    52,390.87x = 78,587.12 × 29,164.93
  4. Step 4: Simplify right side
    52,390.87x = 2,291,987,853.70
  5. Step 5: Solve for x
    x = 2,291,987,853.70/52,390.87
  6. Step 6: Final answer
    x = 43,747.85

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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.