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Finding the Fourth Proportional to 263,391.76, 395,150.52 and 85,898.92

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Solution

The fourth proportional to 263,391.76, 395,150.52 and 85,898.92 is: 128,868.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,391.76 : 395,150.52 = 85,898.92 : x
  2. Step 2: Convert to fraction form
    263,391.76/395,150.52 = 85,898.92/x
  3. Step 3: Cross multiply
    263,391.76x = 395,150.52 × 85,898.92
  4. Step 4: Simplify right side
    263,391.76x = 33,943,002,905.44
  5. Step 5: Solve for x
    x = 33,943,002,905.44/263,391.76
  6. Step 6: Final answer
    x = 128,868.89

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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.