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Finding the Fourth Proportional to 83,944.20, 125,916.30 and 64,917.30

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Solution

The fourth proportional to 83,944.20, 125,916.30 and 64,917.30 is: 97,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,944.20 : 125,916.30 = 64,917.30 : x
  2. Step 2: Convert to fraction form
    83,944.20/125,916.30 = 64,917.30/x
  3. Step 3: Cross multiply
    83,944.20x = 125,916.30 × 64,917.30
  4. Step 4: Simplify right side
    83,944.20x = 8,174,146,221.99
  5. Step 5: Solve for x
    x = 8,174,146,221.99/83,944.20
  6. Step 6: Final answer
    x = 97,375.95

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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.