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Finding the Fourth Proportional to 120,796.80, 166,707.29 and 67,081.80

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Solution

The fourth proportional to 120,796.80, 166,707.29 and 67,081.80 is: 92,577.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,796.80 : 166,707.29 = 67,081.80 : x
  2. Step 2: Convert to fraction form
    120,796.80/166,707.29 = 67,081.80/x
  3. Step 3: Cross multiply
    120,796.80x = 166,707.29 × 67,081.80
  4. Step 4: Simplify right side
    120,796.80x = 11,183,025,086.32
  5. Step 5: Solve for x
    x = 11,183,025,086.32/120,796.80
  6. Step 6: Final answer
    x = 92,577.16

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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.