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Finding the Fourth Proportional to 223,791.26, 335,821.64 and 81,649.01

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Solution

The fourth proportional to 223,791.26, 335,821.64 and 81,649.01 is: 122,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,791.26 : 335,821.64 = 81,649.01 : x
  2. Step 2: Convert to fraction form
    223,791.26/335,821.64 = 81,649.01/x
  3. Step 3: Cross multiply
    223,791.26x = 335,821.64 × 81,649.01
  4. Step 4: Simplify right side
    223,791.26x = 27,419,504,873.89
  5. Step 5: Solve for x
    x = 27,419,504,873.89/223,791.26
  6. Step 6: Final answer
    x = 122,522.68

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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.