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Finding the Fourth Proportional to 27,175.98, 40,728.87 and 12,172.13

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Solution

The fourth proportional to 27,175.98, 40,728.87 and 12,172.13 is: 18,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,175.98 : 40,728.87 = 12,172.13 : x
  2. Step 2: Convert to fraction form
    27,175.98/40,728.87 = 12,172.13/x
  3. Step 3: Cross multiply
    27,175.98x = 40,728.87 × 12,172.13
  4. Step 4: Simplify right side
    27,175.98x = 495,757,100.39
  5. Step 5: Solve for x
    x = 495,757,100.39/27,175.98
  6. Step 6: Final answer
    x = 18,242.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.