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Finding the Fourth Proportional to 263,458.40, 395,188.65 and 63,778.48

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Solution

The fourth proportional to 263,458.40, 395,188.65 and 63,778.48 is: 95,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,458.40 : 395,188.65 = 63,778.48 : x
  2. Step 2: Convert to fraction form
    263,458.40/395,188.65 = 63,778.48/x
  3. Step 3: Cross multiply
    263,458.40x = 395,188.65 × 63,778.48
  4. Step 4: Simplify right side
    263,458.40x = 25,204,530,422.28
  5. Step 5: Solve for x
    x = 25,204,530,422.28/263,458.40
  6. Step 6: Final answer
    x = 95,667.97

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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.