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Finding the Fourth Proportional to 342,321.33, 513,493.71 and 117,679.85

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Solution

The fourth proportional to 342,321.33, 513,493.71 and 117,679.85 is: 176,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,321.33 : 513,493.71 = 117,679.85 : x
  2. Step 2: Convert to fraction form
    342,321.33/513,493.71 = 117,679.85/x
  3. Step 3: Cross multiply
    342,321.33x = 513,493.71 × 117,679.85
  4. Step 4: Simplify right side
    342,321.33x = 60,427,859,612.88
  5. Step 5: Solve for x
    x = 60,427,859,612.88/342,321.33
  6. Step 6: Final answer
    x = 176,523.79

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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.