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Finding the Fourth Proportional to 167,820.79, 251,731.86 and 67,982.86

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Solution

The fourth proportional to 167,820.79, 251,731.86 and 67,982.86 is: 101,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,820.79 : 251,731.86 = 67,982.86 : x
  2. Step 2: Convert to fraction form
    167,820.79/251,731.86 = 67,982.86/x
  3. Step 3: Cross multiply
    167,820.79x = 251,731.86 × 67,982.86
  4. Step 4: Simplify right side
    167,820.79x = 17,113,451,795.92
  5. Step 5: Solve for x
    x = 17,113,451,795.92/167,820.79
  6. Step 6: Final answer
    x = 101,974.56

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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.