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Finding the Fourth Proportional to 65,198.50, 89,979.63 and 36,517.69

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Solution

The fourth proportional to 65,198.50, 89,979.63 and 36,517.69 is: 50,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,198.50 : 89,979.63 = 36,517.69 : x
  2. Step 2: Convert to fraction form
    65,198.50/89,979.63 = 36,517.69/x
  3. Step 3: Cross multiply
    65,198.50x = 89,979.63 × 36,517.69
  4. Step 4: Simplify right side
    65,198.50x = 3,285,848,234.65
  5. Step 5: Solve for x
    x = 3,285,848,234.65/65,198.50
  6. Step 6: Final answer
    x = 50,397.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.