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Finding the Fourth Proportional to 39,481.92, 59,212.80 and 11,773.44

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Solution

The fourth proportional to 39,481.92, 59,212.80 and 11,773.44 is: 17,657.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,481.92 : 59,212.80 = 11,773.44 : x
  2. Step 2: Convert to fraction form
    39,481.92/59,212.80 = 11,773.44/x
  3. Step 3: Cross multiply
    39,481.92x = 59,212.80 × 11,773.44
  4. Step 4: Simplify right side
    39,481.92x = 697,138,348.03
  5. Step 5: Solve for x
    x = 697,138,348.03/39,481.92
  6. Step 6: Final answer
    x = 17,657.15

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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.