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Finding the Fourth Proportional to 167,659.67, 251,600.28 and 78,938.54

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Solution

The fourth proportional to 167,659.67, 251,600.28 and 78,938.54 is: 118,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,659.67 : 251,600.28 = 78,938.54 : x
  2. Step 2: Convert to fraction form
    167,659.67/251,600.28 = 78,938.54/x
  3. Step 3: Cross multiply
    167,659.67x = 251,600.28 × 78,938.54
  4. Step 4: Simplify right side
    167,659.67x = 19,860,957,508.79
  5. Step 5: Solve for x
    x = 19,860,957,508.79/167,659.67
  6. Step 6: Final answer
    x = 118,459.96

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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.