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Finding the Fourth Proportional to 71,812.94, 107,663.90 and 36,255.95

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Solution

The fourth proportional to 71,812.94, 107,663.90 and 36,255.95 is: 54,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.94 : 107,663.90 = 36,255.95 : x
  2. Step 2: Convert to fraction form
    71,812.94/107,663.90 = 36,255.95/x
  3. Step 3: Cross multiply
    71,812.94x = 107,663.90 × 36,255.95
  4. Step 4: Simplify right side
    71,812.94x = 3,903,456,793.93
  5. Step 5: Solve for x
    x = 3,903,456,793.93/71,812.94
  6. Step 6: Final answer
    x = 54,355.90

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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.