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Finding the Fourth Proportional to 18,614.31, 25,687.71 and 10,656.69

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Solution

The fourth proportional to 18,614.31, 25,687.71 and 10,656.69 is: 14,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.31 : 25,687.71 = 10,656.69 : x
  2. Step 2: Convert to fraction form
    18,614.31/25,687.71 = 10,656.69/x
  3. Step 3: Cross multiply
    18,614.31x = 25,687.71 × 10,656.69
  4. Step 4: Simplify right side
    18,614.31x = 273,745,962.28
  5. Step 5: Solve for x
    x = 273,745,962.28/18,614.31
  6. Step 6: Final answer
    x = 14,706.21

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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.