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Finding the Fourth Proportional to 18,593.55, 25,649.61 and 11,872.11

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Solution

The fourth proportional to 18,593.55, 25,649.61 and 11,872.11 is: 16,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.55 : 25,649.61 = 11,872.11 : x
  2. Step 2: Convert to fraction form
    18,593.55/25,649.61 = 11,872.11/x
  3. Step 3: Cross multiply
    18,593.55x = 25,649.61 × 11,872.11
  4. Step 4: Simplify right side
    18,593.55x = 304,514,991.38
  5. Step 5: Solve for x
    x = 304,514,991.38/18,593.55
  6. Step 6: Final answer
    x = 16,377.45

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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.