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Finding the Fourth Proportional to 120,797.60, 166,702.32 and 67,086.08

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Solution

The fourth proportional to 120,797.60, 166,702.32 and 67,086.08 is: 92,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,797.60 : 166,702.32 = 67,086.08 : x
  2. Step 2: Convert to fraction form
    120,797.60/166,702.32 = 67,086.08/x
  3. Step 3: Cross multiply
    120,797.60x = 166,702.32 × 67,086.08
  4. Step 4: Simplify right side
    120,797.60x = 11,183,405,175.71
  5. Step 5: Solve for x
    x = 11,183,405,175.71/120,797.60
  6. Step 6: Final answer
    x = 92,579.70

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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.