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Finding the Fourth Proportional to 133,987.26, 200,911.77 and 55,086.78

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Solution

The fourth proportional to 133,987.26, 200,911.77 and 55,086.78 is: 82,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,987.26 : 200,911.77 = 55,086.78 : x
  2. Step 2: Convert to fraction form
    133,987.26/200,911.77 = 55,086.78/x
  3. Step 3: Cross multiply
    133,987.26x = 200,911.77 × 55,086.78
  4. Step 4: Simplify right side
    133,987.26x = 11,067,582,473.40
  5. Step 5: Solve for x
    x = 11,067,582,473.40/133,987.26
  6. Step 6: Final answer
    x = 82,601.75

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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.