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Finding the Fourth Proportional to 68,814.28, 103,201.98 and 26,691.40

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Solution

The fourth proportional to 68,814.28, 103,201.98 and 26,691.40 is: 40,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,814.28 : 103,201.98 = 26,691.40 : x
  2. Step 2: Convert to fraction form
    68,814.28/103,201.98 = 26,691.40/x
  3. Step 3: Cross multiply
    68,814.28x = 103,201.98 × 26,691.40
  4. Step 4: Simplify right side
    68,814.28x = 2,754,605,328.97
  5. Step 5: Solve for x
    x = 2,754,605,328.97/68,814.28
  6. Step 6: Final answer
    x = 40,029.56

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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.