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Finding the Fourth Proportional to 82,766.40, 124,200.90 and 43,351.80

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Solution

The fourth proportional to 82,766.40, 124,200.90 and 43,351.80 is: 65,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,766.40 : 124,200.90 = 43,351.80 : x
  2. Step 2: Convert to fraction form
    82,766.40/124,200.90 = 43,351.80/x
  3. Step 3: Cross multiply
    82,766.40x = 124,200.90 × 43,351.80
  4. Step 4: Simplify right side
    82,766.40x = 5,384,332,576.62
  5. Step 5: Solve for x
    x = 5,384,332,576.62/82,766.40
  6. Step 6: Final answer
    x = 65,054.57

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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.