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Finding the Fourth Proportional to 68,864.44, 103,035.98 and 40,799.56

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Solution

The fourth proportional to 68,864.44, 103,035.98 and 40,799.56 is: 61,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,864.44 : 103,035.98 = 40,799.56 : x
  2. Step 2: Convert to fraction form
    68,864.44/103,035.98 = 40,799.56/x
  3. Step 3: Cross multiply
    68,864.44x = 103,035.98 × 40,799.56
  4. Step 4: Simplify right side
    68,864.44x = 4,203,822,648.17
  5. Step 5: Solve for x
    x = 4,203,822,648.17/68,864.44
  6. Step 6: Final answer
    x = 61,044.90

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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.