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Finding the Fourth Proportional to 122,333.76, 168,745.44 and 80,940.48

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Solution

The fourth proportional to 122,333.76, 168,745.44 and 80,940.48 is: 111,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,333.76 : 168,745.44 = 80,940.48 : x
  2. Step 2: Convert to fraction form
    122,333.76/168,745.44 = 80,940.48/x
  3. Step 3: Cross multiply
    122,333.76x = 168,745.44 × 80,940.48
  4. Step 4: Simplify right side
    122,333.76x = 13,658,336,911.41
  5. Step 5: Solve for x
    x = 13,658,336,911.41/122,333.76
  6. Step 6: Final answer
    x = 111,648.14

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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.