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Finding the Fourth Proportional to 351,922.44, 527,879.16 and 85,683.24

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Solution

The fourth proportional to 351,922.44, 527,879.16 and 85,683.24 is: 128,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,922.44 : 527,879.16 = 85,683.24 : x
  2. Step 2: Convert to fraction form
    351,922.44/527,879.16 = 85,683.24/x
  3. Step 3: Cross multiply
    351,922.44x = 527,879.16 × 85,683.24
  4. Step 4: Simplify right side
    351,922.44x = 45,230,396,757.28
  5. Step 5: Solve for x
    x = 45,230,396,757.28/351,922.44
  6. Step 6: Final answer
    x = 128,523.76

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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.