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Finding the Fourth Proportional to 71,329.60, 106,864.80 and 58,110.40

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Solution

The fourth proportional to 71,329.60, 106,864.80 and 58,110.40 is: 87,060.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.60 : 106,864.80 = 58,110.40 : x
  2. Step 2: Convert to fraction form
    71,329.60/106,864.80 = 58,110.40/x
  3. Step 3: Cross multiply
    71,329.60x = 106,864.80 × 58,110.40
  4. Step 4: Simplify right side
    71,329.60x = 6,209,956,273.92
  5. Step 5: Solve for x
    x = 6,209,956,273.92/71,329.60
  6. Step 6: Final answer
    x = 87,060.02

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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.