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Finding the Fourth Proportional to 263,396.76, 395,158.02 and 85,903.92

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Solution

The fourth proportional to 263,396.76, 395,158.02 and 85,903.92 is: 128,876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,396.76 : 395,158.02 = 85,903.92 : x
  2. Step 2: Convert to fraction form
    263,396.76/395,158.02 = 85,903.92/x
  3. Step 3: Cross multiply
    263,396.76x = 395,158.02 × 85,903.92
  4. Step 4: Simplify right side
    263,396.76x = 33,945,622,937.44
  5. Step 5: Solve for x
    x = 33,945,622,937.44/263,396.76
  6. Step 6: Final answer
    x = 128,876.39

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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.