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Finding the Fourth Proportional to 120,751.76, 166,629.96 and 67,033.58

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Solution

The fourth proportional to 120,751.76, 166,629.96 and 67,033.58 is: 92,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,751.76 : 166,629.96 = 67,033.58 : x
  2. Step 2: Convert to fraction form
    120,751.76/166,629.96 = 67,033.58/x
  3. Step 3: Cross multiply
    120,751.76x = 166,629.96 × 67,033.58
  4. Step 4: Simplify right side
    120,751.76x = 11,169,801,920.91
  5. Step 5: Solve for x
    x = 11,169,801,920.91/120,751.76
  6. Step 6: Final answer
    x = 92,502.19

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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.