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Finding the Fourth Proportional to 16,819.20, 25,203.06 and 8,475.90

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Solution

The fourth proportional to 16,819.20, 25,203.06 and 8,475.90 is: 12,700.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,819.20 : 25,203.06 = 8,475.90 : x
  2. Step 2: Convert to fraction form
    16,819.20/25,203.06 = 8,475.90/x
  3. Step 3: Cross multiply
    16,819.20x = 25,203.06 × 8,475.90
  4. Step 4: Simplify right side
    16,819.20x = 213,618,616.25
  5. Step 5: Solve for x
    x = 213,618,616.25/16,819.20
  6. Step 6: Final answer
    x = 12,700.88

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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.