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Finding the Fourth Proportional to 73,644.66, 110,470.77 and 21,061.89

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Solution

The fourth proportional to 73,644.66, 110,470.77 and 21,061.89 is: 31,593.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,644.66 : 110,470.77 = 21,061.89 : x
  2. Step 2: Convert to fraction form
    73,644.66/110,470.77 = 21,061.89/x
  3. Step 3: Cross multiply
    73,644.66x = 110,470.77 × 21,061.89
  4. Step 4: Simplify right side
    73,644.66x = 2,326,723,205.96
  5. Step 5: Solve for x
    x = 2,326,723,205.96/73,644.66
  6. Step 6: Final answer
    x = 31,593.92

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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.