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Finding the Fourth Proportional to 68,761.11, 103,143.11 and 22,013.85

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Solution

The fourth proportional to 68,761.11, 103,143.11 and 22,013.85 is: 33,021.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,761.11 : 103,143.11 = 22,013.85 : x
  2. Step 2: Convert to fraction form
    68,761.11/103,143.11 = 22,013.85/x
  3. Step 3: Cross multiply
    68,761.11x = 103,143.11 × 22,013.85
  4. Step 4: Simplify right side
    68,761.11x = 2,270,576,842.00
  5. Step 5: Solve for x
    x = 2,270,576,842.00/68,761.11
  6. Step 6: Final answer
    x = 33,021.24

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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.