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Finding the Fourth Proportional to 88,375.20, 132,562.80 and 29,212.80

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Solution

The fourth proportional to 88,375.20, 132,562.80 and 29,212.80 is: 43,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,375.20 : 132,562.80 = 29,212.80 : x
  2. Step 2: Convert to fraction form
    88,375.20/132,562.80 = 29,212.80/x
  3. Step 3: Cross multiply
    88,375.20x = 132,562.80 × 29,212.80
  4. Step 4: Simplify right side
    88,375.20x = 3,872,530,563.84
  5. Step 5: Solve for x
    x = 3,872,530,563.84/88,375.20
  6. Step 6: Final answer
    x = 43,819.20

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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.