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Finding the Fourth Proportional to 18,593.31, 25,649.26 and 11,871.87

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Solution

The fourth proportional to 18,593.31, 25,649.26 and 11,871.87 is: 16,377.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.31 : 25,649.26 = 11,871.87 : x
  2. Step 2: Convert to fraction form
    18,593.31/25,649.26 = 11,871.87/x
  3. Step 3: Cross multiply
    18,593.31x = 25,649.26 × 11,871.87
  4. Step 4: Simplify right side
    18,593.31x = 304,504,680.32
  5. Step 5: Solve for x
    x = 304,504,680.32/18,593.31
  6. Step 6: Final answer
    x = 16,377.11

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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.