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Finding the Fourth Proportional to 62,112.72, 85,711.22 and 35,255.78

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Solution

The fourth proportional to 62,112.72, 85,711.22 and 35,255.78 is: 48,650.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,112.72 : 85,711.22 = 35,255.78 : x
  2. Step 2: Convert to fraction form
    62,112.72/85,711.22 = 35,255.78/x
  3. Step 3: Cross multiply
    62,112.72x = 85,711.22 × 35,255.78
  4. Step 4: Simplify right side
    62,112.72x = 3,021,815,915.85
  5. Step 5: Solve for x
    x = 3,021,815,915.85/62,112.72
  6. Step 6: Final answer
    x = 48,650.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.