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Finding the Fourth Proportional to 115,364.20, 173,046.30 and 75,965.80

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Solution

The fourth proportional to 115,364.20, 173,046.30 and 75,965.80 is: 113,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,364.20 : 173,046.30 = 75,965.80 : x
  2. Step 2: Convert to fraction form
    115,364.20/173,046.30 = 75,965.80/x
  3. Step 3: Cross multiply
    115,364.20x = 173,046.30 × 75,965.80
  4. Step 4: Simplify right side
    115,364.20x = 13,145,600,616.54
  5. Step 5: Solve for x
    x = 13,145,600,616.54/115,364.20
  6. Step 6: Final answer
    x = 113,948.70

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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.