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Finding the Fourth Proportional to 8,791.11, 13,186.67 and 8,277.53

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Solution

The fourth proportional to 8,791.11, 13,186.67 and 8,277.53 is: 12,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.11 : 13,186.67 = 8,277.53 : x
  2. Step 2: Convert to fraction form
    8,791.11/13,186.67 = 8,277.53/x
  3. Step 3: Cross multiply
    8,791.11x = 13,186.67 × 8,277.53
  4. Step 4: Simplify right side
    8,791.11x = 109,152,949.20
  5. Step 5: Solve for x
    x = 109,152,949.20/8,791.11
  6. Step 6: Final answer
    x = 12,416.29

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Similar ratio
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1.5x scale

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.