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Finding the Fourth Proportional to 115,863.40, 173,859.90 and 49,292.20

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Solution

The fourth proportional to 115,863.40, 173,859.90 and 49,292.20 is: 73,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,863.40 : 173,859.90 = 49,292.20 : x
  2. Step 2: Convert to fraction form
    115,863.40/173,859.90 = 49,292.20/x
  3. Step 3: Cross multiply
    115,863.40x = 173,859.90 × 49,292.20
  4. Step 4: Simplify right side
    115,863.40x = 8,569,936,962.78
  5. Step 5: Solve for x
    x = 8,569,936,962.78/115,863.40
  6. Step 6: Final answer
    x = 73,965.87

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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.