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Finding the Fourth Proportional to 15,067.29, 20,788.09 and 8,693.02

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Solution

The fourth proportional to 15,067.29, 20,788.09 and 8,693.02 is: 11,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.29 : 20,788.09 = 8,693.02 : x
  2. Step 2: Convert to fraction form
    15,067.29/20,788.09 = 8,693.02/x
  3. Step 3: Cross multiply
    15,067.29x = 20,788.09 × 8,693.02
  4. Step 4: Simplify right side
    15,067.29x = 180,711,282.13
  5. Step 5: Solve for x
    x = 180,711,282.13/15,067.29
  6. Step 6: Final answer
    x = 11,993.62

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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.