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Finding the Fourth Proportional to 92,508.49, 138,818.10 and 39,917.98

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Solution

The fourth proportional to 92,508.49, 138,818.10 and 39,917.98 is: 59,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,508.49 : 138,818.10 = 39,917.98 : x
  2. Step 2: Convert to fraction form
    92,508.49/138,818.10 = 39,917.98/x
  3. Step 3: Cross multiply
    92,508.49x = 138,818.10 × 39,917.98
  4. Step 4: Simplify right side
    92,508.49x = 5,541,338,139.44
  5. Step 5: Solve for x
    x = 5,541,338,139.44/92,508.49
  6. Step 6: Final answer
    x = 59,900.86

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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.