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Finding the Fourth Proportional to 120,773.70, 166,661.01 and 67,055.31

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Solution

The fourth proportional to 120,773.70, 166,661.01 and 67,055.31 is: 92,532.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,773.70 : 166,661.01 = 67,055.31 : x
  2. Step 2: Convert to fraction form
    120,773.70/166,661.01 = 67,055.31/x
  3. Step 3: Cross multiply
    120,773.70x = 166,661.01 × 67,055.31
  4. Step 4: Simplify right side
    120,773.70x = 11,175,505,690.46
  5. Step 5: Solve for x
    x = 11,175,505,690.46/120,773.70
  6. Step 6: Final answer
    x = 92,532.61

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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.