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Finding the Fourth Proportional to 12,614.71, 18,925.71 and 5,217.79

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Solution

The fourth proportional to 12,614.71, 18,925.71 and 5,217.79 is: 7,828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.71 : 18,925.71 = 5,217.79 : x
  2. Step 2: Convert to fraction form
    12,614.71/18,925.71 = 5,217.79/x
  3. Step 3: Cross multiply
    12,614.71x = 18,925.71 × 5,217.79
  4. Step 4: Simplify right side
    12,614.71x = 98,750,380.38
  5. Step 5: Solve for x
    x = 98,750,380.38/12,614.71
  6. Step 6: Final answer
    x = 7,828.19

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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.