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Finding the Fourth Proportional to 12,280.66, 16,947.31 and 6,691.66

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Solution

The fourth proportional to 12,280.66, 16,947.31 and 6,691.66 is: 9,234.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.66 : 16,947.31 = 6,691.66 : x
  2. Step 2: Convert to fraction form
    12,280.66/16,947.31 = 6,691.66/x
  3. Step 3: Cross multiply
    12,280.66x = 16,947.31 × 6,691.66
  4. Step 4: Simplify right side
    12,280.66x = 113,405,636.43
  5. Step 5: Solve for x
    x = 113,405,636.43/12,280.66
  6. Step 6: Final answer
    x = 9,234.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.