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Finding the Fourth Proportional to 17,768.81, 26,631.97 and 8,268.29

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Solution

The fourth proportional to 17,768.81, 26,631.97 and 8,268.29 is: 12,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,768.81 : 26,631.97 = 8,268.29 : x
  2. Step 2: Convert to fraction form
    17,768.81/26,631.97 = 8,268.29/x
  3. Step 3: Cross multiply
    17,768.81x = 26,631.97 × 8,268.29
  4. Step 4: Simplify right side
    17,768.81x = 220,200,851.23
  5. Step 5: Solve for x
    x = 220,200,851.23/17,768.81
  6. Step 6: Final answer
    x = 12,392.55

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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.