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Finding the Fourth Proportional to 122,429.62, 168,969.90 and 67,994.02

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Solution

The fourth proportional to 122,429.62, 168,969.90 and 67,994.02 is: 93,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,429.62 : 168,969.90 = 67,994.02 : x
  2. Step 2: Convert to fraction form
    122,429.62/168,969.90 = 67,994.02/x
  3. Step 3: Cross multiply
    122,429.62x = 168,969.90 × 67,994.02
  4. Step 4: Simplify right side
    122,429.62x = 11,488,942,760.00
  5. Step 5: Solve for x
    x = 11,488,942,760.00/122,429.62
  6. Step 6: Final answer
    x = 93,841.20

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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.