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Finding the Fourth Proportional to 38,906.50, 53,687.90 and 22,987.96

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Solution

The fourth proportional to 38,906.50, 53,687.90 and 22,987.96 is: 31,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,906.50 : 53,687.90 = 22,987.96 : x
  2. Step 2: Convert to fraction form
    38,906.50/53,687.90 = 22,987.96/x
  3. Step 3: Cross multiply
    38,906.50x = 53,687.90 × 22,987.96
  4. Step 4: Simplify right side
    38,906.50x = 1,234,175,297.68
  5. Step 5: Solve for x
    x = 1,234,175,297.68/38,906.50
  6. Step 6: Final answer
    x = 31,721.57

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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.