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Finding the Fourth Proportional to 411,018.80, 616,067.40 and 174,321.20

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Solution

The fourth proportional to 411,018.80, 616,067.40 and 174,321.20 is: 261,286.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,018.80 : 616,067.40 = 174,321.20 : x
  2. Step 2: Convert to fraction form
    411,018.80/616,067.40 = 174,321.20/x
  3. Step 3: Cross multiply
    411,018.80x = 616,067.40 × 174,321.20
  4. Step 4: Simplify right side
    411,018.80x = 107,393,608,448.88
  5. Step 5: Solve for x
    x = 107,393,608,448.88/411,018.80
  6. Step 6: Final answer
    x = 261,286.37

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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.