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Finding the Fourth Proportional to 10,885.11, 15,021.63 and 6,169.29

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Solution

The fourth proportional to 10,885.11, 15,021.63 and 6,169.29 is: 8,513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.11 : 15,021.63 = 6,169.29 : x
  2. Step 2: Convert to fraction form
    10,885.11/15,021.63 = 6,169.29/x
  3. Step 3: Cross multiply
    10,885.11x = 15,021.63 × 6,169.29
  4. Step 4: Simplify right side
    10,885.11x = 92,672,791.74
  5. Step 5: Solve for x
    x = 92,672,791.74/10,885.11
  6. Step 6: Final answer
    x = 8,513.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.