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Finding the Fourth Proportional to 122,797,982.32, 169,460,338.02 and 67,043,400.88

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Solution

The fourth proportional to 122,797,982.32, 169,460,338.02 and 67,043,400.88 is: 92,519,414.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,797,982.32 : 169,460,338.02 = 67,043,400.88 : x
  2. Step 2: Convert to fraction form
    122,797,982.32/169,460,338.02 = 67,043,400.88/x
  3. Step 3: Cross multiply
    122,797,982.32x = 169,460,338.02 × 67,043,400.88
  4. Step 4: Simplify right side
    122,797,982.32x = 11,361,197,375,135,166
  5. Step 5: Solve for x
    x = 11,361,197,375,135,166/122,797,982.32
  6. Step 6: Final answer
    x = 92,519,414.09

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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.