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Finding the Fourth Proportional to 54,366.75, 75,026.25 and 31,721.31

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Solution

The fourth proportional to 54,366.75, 75,026.25 and 31,721.31 is: 43,775.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,366.75 : 75,026.25 = 31,721.31 : x
  2. Step 2: Convert to fraction form
    54,366.75/75,026.25 = 31,721.31/x
  3. Step 3: Cross multiply
    54,366.75x = 75,026.25 × 31,721.31
  4. Step 4: Simplify right side
    54,366.75x = 2,379,930,934.39
  5. Step 5: Solve for x
    x = 2,379,930,934.39/54,366.75
  6. Step 6: Final answer
    x = 43,775.49

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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.