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Finding the Fourth Proportional to 43,608.60, 65,439.90 and 17,310.60

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Solution

The fourth proportional to 43,608.60, 65,439.90 and 17,310.60 is: 25,976.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,608.60 : 65,439.90 = 17,310.60 : x
  2. Step 2: Convert to fraction form
    43,608.60/65,439.90 = 17,310.60/x
  3. Step 3: Cross multiply
    43,608.60x = 65,439.90 × 17,310.60
  4. Step 4: Simplify right side
    43,608.60x = 1,132,803,932.94
  5. Step 5: Solve for x
    x = 1,132,803,932.94/43,608.60
  6. Step 6: Final answer
    x = 25,976.62

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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.