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Finding the Fourth Proportional to 52,517.90, 78,811.89 and 27,240.74

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Solution

The fourth proportional to 52,517.90, 78,811.89 and 27,240.74 is: 40,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,517.90 : 78,811.89 = 27,240.74 : x
  2. Step 2: Convert to fraction form
    52,517.90/78,811.89 = 27,240.74/x
  3. Step 3: Cross multiply
    52,517.90x = 78,811.89 × 27,240.74
  4. Step 4: Simplify right side
    52,517.90x = 2,146,894,003.73
  5. Step 5: Solve for x
    x = 2,146,894,003.73/52,517.90
  6. Step 6: Final answer
    x = 40,879.28

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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.