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Finding the Fourth Proportional to 263,270.68, 394,933.82 and 85,791.56

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Solution

The fourth proportional to 263,270.68, 394,933.82 and 85,791.56 is: 128,696.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,270.68 : 394,933.82 = 85,791.56 : x
  2. Step 2: Convert to fraction form
    263,270.68/394,933.82 = 85,791.56/x
  3. Step 3: Cross multiply
    263,270.68x = 394,933.82 × 85,791.56
  4. Step 4: Simplify right side
    263,270.68x = 33,881,988,514.56
  5. Step 5: Solve for x
    x = 33,881,988,514.56/263,270.68
  6. Step 6: Final answer
    x = 128,696.40

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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.