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Finding the Fourth Proportional to 117,781.50, 176,711.13 and 47,622.54

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Solution

The fourth proportional to 117,781.50, 176,711.13 and 47,622.54 is: 71,449.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,781.50 : 176,711.13 = 47,622.54 : x
  2. Step 2: Convert to fraction form
    117,781.50/176,711.13 = 47,622.54/x
  3. Step 3: Cross multiply
    117,781.50x = 176,711.13 × 47,622.54
  4. Step 4: Simplify right side
    117,781.50x = 8,415,432,856.87
  5. Step 5: Solve for x
    x = 8,415,432,856.87/117,781.50
  6. Step 6: Final answer
    x = 71,449.53

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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.