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Finding the Fourth Proportional to 73,469.84, 110,204.75 and 20,872.49

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Solution

The fourth proportional to 73,469.84, 110,204.75 and 20,872.49 is: 31,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,469.84 : 110,204.75 = 20,872.49 : x
  2. Step 2: Convert to fraction form
    73,469.84/110,204.75 = 20,872.49/x
  3. Step 3: Cross multiply
    73,469.84x = 110,204.75 × 20,872.49
  4. Step 4: Simplify right side
    73,469.84x = 2,300,247,043.48
  5. Step 5: Solve for x
    x = 2,300,247,043.48/73,469.84
  6. Step 6: Final answer
    x = 31,308.73

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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.