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Finding the Fourth Proportional to 263,372.96, 395,100.48 and 85,838.78

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Solution

The fourth proportional to 263,372.96, 395,100.48 and 85,838.78 is: 128,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,372.96 : 395,100.48 = 85,838.78 : x
  2. Step 2: Convert to fraction form
    263,372.96/395,100.48 = 85,838.78/x
  3. Step 3: Cross multiply
    263,372.96x = 395,100.48 × 85,838.78
  4. Step 4: Simplify right side
    263,372.96x = 33,914,943,180.61
  5. Step 5: Solve for x
    x = 33,914,943,180.61/263,372.96
  6. Step 6: Final answer
    x = 128,771.55

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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.