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Finding the Fourth Proportional to 115,914.80, 173,872.20 and 53,706.80

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Solution

The fourth proportional to 115,914.80, 173,872.20 and 53,706.80 is: 80,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,914.80 : 173,872.20 = 53,706.80 : x
  2. Step 2: Convert to fraction form
    115,914.80/173,872.20 = 53,706.80/x
  3. Step 3: Cross multiply
    115,914.80x = 173,872.20 × 53,706.80
  4. Step 4: Simplify right side
    115,914.80x = 9,338,119,470.96
  5. Step 5: Solve for x
    x = 9,338,119,470.96/115,914.80
  6. Step 6: Final answer
    x = 80,560.20

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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.