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Finding the Fourth Proportional to 264,346.80, 396,779.40 and 131,377.20

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Solution

The fourth proportional to 264,346.80, 396,779.40 and 131,377.20 is: 197,194.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,346.80 : 396,779.40 = 131,377.20 : x
  2. Step 2: Convert to fraction form
    264,346.80/396,779.40 = 131,377.20/x
  3. Step 3: Cross multiply
    264,346.80x = 396,779.40 × 131,377.20
  4. Step 4: Simplify right side
    264,346.80x = 52,127,766,589.68
  5. Step 5: Solve for x
    x = 52,127,766,589.68/264,346.80
  6. Step 6: Final answer
    x = 197,194.62

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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.