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Finding the Fourth Proportional to 73,591.74, 110,388.57 and 21,001.20

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Solution

The fourth proportional to 73,591.74, 110,388.57 and 21,001.20 is: 31,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,591.74 : 110,388.57 = 21,001.20 : x
  2. Step 2: Convert to fraction form
    73,591.74/110,388.57 = 21,001.20/x
  3. Step 3: Cross multiply
    73,591.74x = 110,388.57 × 21,001.20
  4. Step 4: Simplify right side
    73,591.74x = 2,318,292,436.28
  5. Step 5: Solve for x
    x = 2,318,292,436.28/73,591.74
  6. Step 6: Final answer
    x = 31,502.07

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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.