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Finding the Fourth Proportional to 73,304.54, 109,961.25 and 20,717.96

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Solution

The fourth proportional to 73,304.54, 109,961.25 and 20,717.96 is: 31,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,304.54 : 109,961.25 = 20,717.96 : x
  2. Step 2: Convert to fraction form
    73,304.54/109,961.25 = 20,717.96/x
  3. Step 3: Cross multiply
    73,304.54x = 109,961.25 × 20,717.96
  4. Step 4: Simplify right side
    73,304.54x = 2,278,172,779.05
  5. Step 5: Solve for x
    x = 2,278,172,779.05/73,304.54
  6. Step 6: Final answer
    x = 31,078.19

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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.