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Finding the Fourth Proportional to 22,789.60, 34,199.59 and 8,761.21

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Solution

The fourth proportional to 22,789.60, 34,199.59 and 8,761.21 is: 13,147.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,789.60 : 34,199.59 = 8,761.21 : x
  2. Step 2: Convert to fraction form
    22,789.60/34,199.59 = 8,761.21/x
  3. Step 3: Cross multiply
    22,789.60x = 34,199.59 × 8,761.21
  4. Step 4: Simplify right side
    22,789.60x = 299,629,682.50
  5. Step 5: Solve for x
    x = 299,629,682.50/22,789.60
  6. Step 6: Final answer
    x = 13,147.65

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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.