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Finding the Fourth Proportional to 22,691.36, 34,037.44 and 8,657.90

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Solution

The fourth proportional to 22,691.36, 34,037.44 and 8,657.90 is: 12,987.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.36 : 34,037.44 = 8,657.90 : x
  2. Step 2: Convert to fraction form
    22,691.36/34,037.44 = 8,657.90/x
  3. Step 3: Cross multiply
    22,691.36x = 34,037.44 × 8,657.90
  4. Step 4: Simplify right side
    22,691.36x = 294,692,751.78
  5. Step 5: Solve for x
    x = 294,692,751.78/22,691.36
  6. Step 6: Final answer
    x = 12,987.00

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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.