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Finding the Fourth Proportional to 26,591.92, 39,917.05 and 11,020.48

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Solution

The fourth proportional to 26,591.92, 39,917.05 and 11,020.48 is: 16,542.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,591.92 : 39,917.05 = 11,020.48 : x
  2. Step 2: Convert to fraction form
    26,591.92/39,917.05 = 11,020.48/x
  3. Step 3: Cross multiply
    26,591.92x = 39,917.05 × 11,020.48
  4. Step 4: Simplify right side
    26,591.92x = 439,904,923.84
  5. Step 5: Solve for x
    x = 439,904,923.84/26,591.92
  6. Step 6: Final answer
    x = 16,542.81

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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.