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Finding the Fourth Proportional to 110,979.60, 166,481.55 and 107,480.40

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Solution

The fourth proportional to 110,979.60, 166,481.55 and 107,480.40 is: 161,232.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,979.60 : 166,481.55 = 107,480.40 : x
  2. Step 2: Convert to fraction form
    110,979.60/166,481.55 = 107,480.40/x
  3. Step 3: Cross multiply
    110,979.60x = 166,481.55 × 107,480.40
  4. Step 4: Simplify right side
    110,979.60x = 17,893,503,586.62
  5. Step 5: Solve for x
    x = 17,893,503,586.62/110,979.60
  6. Step 6: Final answer
    x = 161,232.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.