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Finding the Fourth Proportional to 13,732.17, 18,948.65 and 8,949.93

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Solution

The fourth proportional to 13,732.17, 18,948.65 and 8,949.93 is: 12,349.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,732.17 : 18,948.65 = 8,949.93 : x
  2. Step 2: Convert to fraction form
    13,732.17/18,948.65 = 8,949.93/x
  3. Step 3: Cross multiply
    13,732.17x = 18,948.65 × 8,949.93
  4. Step 4: Simplify right side
    13,732.17x = 169,589,046.34
  5. Step 5: Solve for x
    x = 169,589,046.34/13,732.17
  6. Step 6: Final answer
    x = 12,349.76

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1.5x scale

Why These Related Problems?

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