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Finding the Fourth Proportional to 71,893.76, 107,819.52 and 25,137.92

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Solution

The fourth proportional to 71,893.76, 107,819.52 and 25,137.92 is: 37,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,893.76 : 107,819.52 = 25,137.92 : x
  2. Step 2: Convert to fraction form
    71,893.76/107,819.52 = 25,137.92/x
  3. Step 3: Cross multiply
    71,893.76x = 107,819.52 × 25,137.92
  4. Step 4: Simplify right side
    71,893.76x = 2,710,358,468.20
  5. Step 5: Solve for x
    x = 2,710,358,468.20/71,893.76
  6. Step 6: Final answer
    x = 37,699.50

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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.