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Finding the Fourth Proportional to 73,239.54, 100,997.78 and 55,133.61

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Solution

The fourth proportional to 73,239.54, 100,997.78 and 55,133.61 is: 76,029.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,239.54 : 100,997.78 = 55,133.61 : x
  2. Step 2: Convert to fraction form
    73,239.54/100,997.78 = 55,133.61/x
  3. Step 3: Cross multiply
    73,239.54x = 100,997.78 × 55,133.61
  4. Step 4: Simplify right side
    73,239.54x = 5,568,372,213.39
  5. Step 5: Solve for x
    x = 5,568,372,213.39/73,239.54
  6. Step 6: Final answer
    x = 76,029.59

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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.