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Finding the Fourth Proportional to 320,726.67, 481,092.09 and 84,067.32

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Solution

The fourth proportional to 320,726.67, 481,092.09 and 84,067.32 is: 126,101.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,726.67 : 481,092.09 = 84,067.32 : x
  2. Step 2: Convert to fraction form
    320,726.67/481,092.09 = 84,067.32/x
  3. Step 3: Cross multiply
    320,726.67x = 481,092.09 × 84,067.32
  4. Step 4: Simplify right side
    320,726.67x = 40,444,122,679.50
  5. Step 5: Solve for x
    x = 40,444,122,679.50/320,726.67
  6. Step 6: Final answer
    x = 126,101.53

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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.