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Finding the Fourth Proportional to 272,003.80, 408,063.30 and 82,448.60

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Solution

The fourth proportional to 272,003.80, 408,063.30 and 82,448.60 is: 123,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,003.80 : 408,063.30 = 82,448.60 : x
  2. Step 2: Convert to fraction form
    272,003.80/408,063.30 = 82,448.60/x
  3. Step 3: Cross multiply
    272,003.80x = 408,063.30 × 82,448.60
  4. Step 4: Simplify right side
    272,003.80x = 33,644,247,796.38
  5. Step 5: Solve for x
    x = 33,644,247,796.38/272,003.80
  6. Step 6: Final answer
    x = 123,690.36

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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.