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Finding the Fourth Proportional to 27,572.91, 41,342.70 and 12,372.70

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Solution

The fourth proportional to 27,572.91, 41,342.70 and 12,372.70 is: 18,551.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,572.91 : 41,342.70 = 12,372.70 : x
  2. Step 2: Convert to fraction form
    27,572.91/41,342.70 = 12,372.70/x
  3. Step 3: Cross multiply
    27,572.91x = 41,342.70 × 12,372.70
  4. Step 4: Simplify right side
    27,572.91x = 511,521,019.26
  5. Step 5: Solve for x
    x = 511,521,019.26/27,572.91
  6. Step 6: Final answer
    x = 18,551.58

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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.