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Finding the Fourth Proportional to 8,651.91, 11,938.79 and 5,067.26

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Solution

The fourth proportional to 8,651.91, 11,938.79 and 5,067.26 is: 6,992.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.91 : 11,938.79 = 5,067.26 : x
  2. Step 2: Convert to fraction form
    8,651.91/11,938.79 = 5,067.26/x
  3. Step 3: Cross multiply
    8,651.91x = 11,938.79 × 5,067.26
  4. Step 4: Simplify right side
    8,651.91x = 60,496,867.99
  5. Step 5: Solve for x
    x = 60,496,867.99/8,651.91
  6. Step 6: Final answer
    x = 6,992.31

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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.