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Finding the Fourth Proportional to 263,370.96, 395,097.48 and 85,836.78

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Solution

The fourth proportional to 263,370.96, 395,097.48 and 85,836.78 is: 128,768.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,370.96 : 395,097.48 = 85,836.78 : x
  2. Step 2: Convert to fraction form
    263,370.96/395,097.48 = 85,836.78/x
  3. Step 3: Cross multiply
    263,370.96x = 395,097.48 × 85,836.78
  4. Step 4: Simplify right side
    263,370.96x = 33,913,895,469.31
  5. Step 5: Solve for x
    x = 33,913,895,469.31/263,370.96
  6. Step 6: Final answer
    x = 128,768.55

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1.5x scale

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.