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Finding the Fourth Proportional to 43,755.20, 65,565.60 and 32,609.60

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Solution

The fourth proportional to 43,755.20, 65,565.60 and 32,609.60 is: 48,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,755.20 : 65,565.60 = 32,609.60 : x
  2. Step 2: Convert to fraction form
    43,755.20/65,565.60 = 32,609.60/x
  3. Step 3: Cross multiply
    43,755.20x = 65,565.60 × 32,609.60
  4. Step 4: Simplify right side
    43,755.20x = 2,138,067,989.76
  5. Step 5: Solve for x
    x = 2,138,067,989.76/43,755.20
  6. Step 6: Final answer
    x = 48,864.32

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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.