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Finding the Fourth Proportional to 16,917.20, 25,375.80 and 16,269.20

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Solution

The fourth proportional to 16,917.20, 25,375.80 and 16,269.20 is: 24,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,917.20 : 25,375.80 = 16,269.20 : x
  2. Step 2: Convert to fraction form
    16,917.20/25,375.80 = 16,269.20/x
  3. Step 3: Cross multiply
    16,917.20x = 25,375.80 × 16,269.20
  4. Step 4: Simplify right side
    16,917.20x = 412,843,965.36
  5. Step 5: Solve for x
    x = 412,843,965.36/16,917.20
  6. Step 6: Final answer
    x = 24,403.80

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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.