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Finding the Fourth Proportional to 18,572.61, 27,826.47 and 15,472.56

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Solution

The fourth proportional to 18,572.61, 27,826.47 and 15,472.56 is: 23,181.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.61 : 27,826.47 = 15,472.56 : x
  2. Step 2: Convert to fraction form
    18,572.61/27,826.47 = 15,472.56/x
  3. Step 3: Cross multiply
    18,572.61x = 27,826.47 × 15,472.56
  4. Step 4: Simplify right side
    18,572.61x = 430,546,726.66
  5. Step 5: Solve for x
    x = 430,546,726.66/18,572.61
  6. Step 6: Final answer
    x = 23,181.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.