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Finding the Fourth Proportional to 8,494.43, 11,723.14 and 4,909.57

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Solution

The fourth proportional to 8,494.43, 11,723.14 and 4,909.57 is: 6,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494.43 : 11,723.14 = 4,909.57 : x
  2. Step 2: Convert to fraction form
    8,494.43/11,723.14 = 4,909.57/x
  3. Step 3: Cross multiply
    8,494.43x = 11,723.14 × 4,909.57
  4. Step 4: Simplify right side
    8,494.43x = 57,555,576.45
  5. Step 5: Solve for x
    x = 57,555,576.45/8,494.43
  6. Step 6: Final answer
    x = 6,775.68

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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.