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Finding the Fourth Proportional to 122,462.57, 168,998.26 and 68,747.69

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Solution

The fourth proportional to 122,462.57, 168,998.26 and 68,747.69 is: 94,871.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,462.57 : 168,998.26 = 68,747.69 : x
  2. Step 2: Convert to fraction form
    122,462.57/168,998.26 = 68,747.69/x
  3. Step 3: Cross multiply
    122,462.57x = 168,998.26 × 68,747.69
  4. Step 4: Simplify right side
    122,462.57x = 11,618,239,989.02
  5. Step 5: Solve for x
    x = 11,618,239,989.02/122,462.57
  6. Step 6: Final answer
    x = 94,871.76

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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.