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Finding the Fourth Proportional to 122,092.44, 168,479.40 and 67,640.94

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Solution

The fourth proportional to 122,092.44, 168,479.40 and 67,640.94 is: 93,339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,092.44 : 168,479.40 = 67,640.94 : x
  2. Step 2: Convert to fraction form
    122,092.44/168,479.40 = 67,640.94/x
  3. Step 3: Cross multiply
    122,092.44x = 168,479.40 × 67,640.94
  4. Step 4: Simplify right side
    122,092.44x = 11,396,104,986.64
  5. Step 5: Solve for x
    x = 11,396,104,986.64/122,092.44
  6. Step 6: Final answer
    x = 93,339.97

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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.