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Finding the Fourth Proportional to 225,981.92, 339,027.60 and 68,200.72

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Solution

The fourth proportional to 225,981.92, 339,027.60 and 68,200.72 is: 102,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,981.92 : 339,027.60 = 68,200.72 : x
  2. Step 2: Convert to fraction form
    225,981.92/339,027.60 = 68,200.72/x
  3. Step 3: Cross multiply
    225,981.92x = 339,027.60 × 68,200.72
  4. Step 4: Simplify right side
    225,981.92x = 23,121,926,419.87
  5. Step 5: Solve for x
    x = 23,121,926,419.87/225,981.92
  6. Step 6: Final answer
    x = 102,317.59

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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.