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Finding the Fourth Proportional to 157,658.67, 236,481.39 and 73,389.87

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Solution

The fourth proportional to 157,658.67, 236,481.39 and 73,389.87 is: 110,081.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,658.67 : 236,481.39 = 73,389.87 : x
  2. Step 2: Convert to fraction form
    157,658.67/236,481.39 = 73,389.87/x
  3. Step 3: Cross multiply
    157,658.67x = 236,481.39 × 73,389.87
  4. Step 4: Simplify right side
    157,658.67x = 17,355,338,469.52
  5. Step 5: Solve for x
    x = 17,355,338,469.52/157,658.67
  6. Step 6: Final answer
    x = 110,081.73

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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.