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Finding the Fourth Proportional to 115,408.80, 166,876.20 and 115,408.80

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Solution

The fourth proportional to 115,408.80, 166,876.20 and 115,408.80 is: 166,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,408.80 : 166,876.20 = 115,408.80 : x
  2. Step 2: Convert to fraction form
    115,408.80/166,876.20 = 115,408.80/x
  3. Step 3: Cross multiply
    115,408.80x = 166,876.20 × 115,408.80
  4. Step 4: Simplify right side
    115,408.80x = 19,258,981,990.56
  5. Step 5: Solve for x
    x = 19,258,981,990.56/115,408.80
  6. Step 6: Final answer
    x = 166,876.20

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.