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Finding the Fourth Proportional to 92,866.41, 139,176.60 and 82,286.80

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Solution

The fourth proportional to 92,866.41, 139,176.60 and 82,286.80 is: 123,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,866.41 : 139,176.60 = 82,286.80 : x
  2. Step 2: Convert to fraction form
    92,866.41/139,176.60 = 82,286.80/x
  3. Step 3: Cross multiply
    92,866.41x = 139,176.60 × 82,286.80
  4. Step 4: Simplify right side
    92,866.41x = 11,452,397,048.88
  5. Step 5: Solve for x
    x = 11,452,397,048.88/92,866.41
  6. Step 6: Final answer
    x = 123,321.20

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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.