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Finding the Fourth Proportional to 68,753.31, 103,139.85 and 26,074.44

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Solution

The fourth proportional to 68,753.31, 103,139.85 and 26,074.44 is: 39,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.31 : 103,139.85 = 26,074.44 : x
  2. Step 2: Convert to fraction form
    68,753.31/103,139.85 = 26,074.44/x
  3. Step 3: Cross multiply
    68,753.31x = 103,139.85 × 26,074.44
  4. Step 4: Simplify right side
    68,753.31x = 2,689,313,830.43
  5. Step 5: Solve for x
    x = 2,689,313,830.43/68,753.31
  6. Step 6: Final answer
    x = 39,115.41

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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.