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Finding the Fourth Proportional to 17,861.85, 26,785.91 and 8,494.65

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Solution

The fourth proportional to 17,861.85, 26,785.91 and 8,494.65 is: 12,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.85 : 26,785.91 = 8,494.65 : x
  2. Step 2: Convert to fraction form
    17,861.85/26,785.91 = 8,494.65/x
  3. Step 3: Cross multiply
    17,861.85x = 26,785.91 × 8,494.65
  4. Step 4: Simplify right side
    17,861.85x = 227,536,951.62
  5. Step 5: Solve for x
    x = 227,536,951.62/17,861.85
  6. Step 6: Final answer
    x = 12,738.71

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1.5x scale

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.