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Finding the Fourth Proportional to 263,867.68, 395,857.02 and 86,360.92

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Solution

The fourth proportional to 263,867.68, 395,857.02 and 86,360.92 is: 129,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,867.68 : 395,857.02 = 86,360.92 : x
  2. Step 2: Convert to fraction form
    263,867.68/395,857.02 = 86,360.92/x
  3. Step 3: Cross multiply
    263,867.68x = 395,857.02 × 86,360.92
  4. Step 4: Simplify right side
    263,867.68x = 34,186,576,435.66
  5. Step 5: Solve for x
    x = 34,186,576,435.66/263,867.68
  6. Step 6: Final answer
    x = 129,559.54

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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.