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Finding the Fourth Proportional to 16,812.80, 25,226.40 and 8,604.80

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Solution

The fourth proportional to 16,812.80, 25,226.40 and 8,604.80 is: 12,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,812.80 : 25,226.40 = 8,604.80 : x
  2. Step 2: Convert to fraction form
    16,812.80/25,226.40 = 8,604.80/x
  3. Step 3: Cross multiply
    16,812.80x = 25,226.40 × 8,604.80
  4. Step 4: Simplify right side
    16,812.80x = 217,068,126.72
  5. Step 5: Solve for x
    x = 217,068,126.72/16,812.80
  6. Step 6: Final answer
    x = 12,910.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.