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Finding the Fourth Proportional to 18,372.29, 27,558.43 and 4,521.29

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Solution

The fourth proportional to 18,372.29, 27,558.43 and 4,521.29 is: 6,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.29 : 27,558.43 = 4,521.29 : x
  2. Step 2: Convert to fraction form
    18,372.29/27,558.43 = 4,521.29/x
  3. Step 3: Cross multiply
    18,372.29x = 27,558.43 × 4,521.29
  4. Step 4: Simplify right side
    18,372.29x = 124,599,504.88
  5. Step 5: Solve for x
    x = 124,599,504.88/18,372.29
  6. Step 6: Final answer
    x = 6,781.93

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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.