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Finding the Fourth Proportional to 66,917.28, 100,400.52 and 27,463.80

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Solution

The fourth proportional to 66,917.28, 100,400.52 and 27,463.80 is: 41,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.28 : 100,400.52 = 27,463.80 : x
  2. Step 2: Convert to fraction form
    66,917.28/100,400.52 = 27,463.80/x
  3. Step 3: Cross multiply
    66,917.28x = 100,400.52 × 27,463.80
  4. Step 4: Simplify right side
    66,917.28x = 2,757,379,801.18
  5. Step 5: Solve for x
    x = 2,757,379,801.18/66,917.28
  6. Step 6: Final answer
    x = 41,205.80

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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.