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Finding the Fourth Proportional to 67,858.20, 101,816.10 and 32,779.80

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Solution

The fourth proportional to 67,858.20, 101,816.10 and 32,779.80 is: 49,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,858.20 : 101,816.10 = 32,779.80 : x
  2. Step 2: Convert to fraction form
    67,858.20/101,816.10 = 32,779.80/x
  3. Step 3: Cross multiply
    67,858.20x = 101,816.10 × 32,779.80
  4. Step 4: Simplify right side
    67,858.20x = 3,337,511,394.78
  5. Step 5: Solve for x
    x = 3,337,511,394.78/67,858.20
  6. Step 6: Final answer
    x = 49,183.61

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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.