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Finding the Fourth Proportional to 263,808.68, 395,768.38 and 86,301.78

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Solution

The fourth proportional to 263,808.68, 395,768.38 and 86,301.78 is: 129,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,808.68 : 395,768.38 = 86,301.78 : x
  2. Step 2: Convert to fraction form
    263,808.68/395,768.38 = 86,301.78/x
  3. Step 3: Cross multiply
    263,808.68x = 395,768.38 × 86,301.78
  4. Step 4: Simplify right side
    263,808.68x = 34,155,515,661.72
  5. Step 5: Solve for x
    x = 34,155,515,661.72/263,808.68
  6. Step 6: Final answer
    x = 129,470.78

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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.