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Finding the Fourth Proportional to 82,195.20, 123,292.80 and 26,791.20

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Solution

The fourth proportional to 82,195.20, 123,292.80 and 26,791.20 is: 40,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,195.20 : 123,292.80 = 26,791.20 : x
  2. Step 2: Convert to fraction form
    82,195.20/123,292.80 = 26,791.20/x
  3. Step 3: Cross multiply
    82,195.20x = 123,292.80 × 26,791.20
  4. Step 4: Simplify right side
    82,195.20x = 3,303,162,063.36
  5. Step 5: Solve for x
    x = 3,303,162,063.36/82,195.20
  6. Step 6: Final answer
    x = 40,186.80

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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.