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Finding the Fourth Proportional to 122,424.52, 168,940.74 and 68,713.96

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Solution

The fourth proportional to 122,424.52, 168,940.74 and 68,713.96 is: 94,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,424.52 : 168,940.74 = 68,713.96 : x
  2. Step 2: Convert to fraction form
    122,424.52/168,940.74 = 68,713.96/x
  3. Step 3: Cross multiply
    122,424.52x = 168,940.74 × 68,713.96
  4. Step 4: Simplify right side
    122,424.52x = 11,608,587,250.73
  5. Step 5: Solve for x
    x = 11,608,587,250.73/122,424.52
  6. Step 6: Final answer
    x = 94,822.40

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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.