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Finding the Fourth Proportional to 18,120.54, 27,175.89 and 4,969.80

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Solution

The fourth proportional to 18,120.54, 27,175.89 and 4,969.80 is: 7,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.54 : 27,175.89 = 4,969.80 : x
  2. Step 2: Convert to fraction form
    18,120.54/27,175.89 = 4,969.80/x
  3. Step 3: Cross multiply
    18,120.54x = 27,175.89 × 4,969.80
  4. Step 4: Simplify right side
    18,120.54x = 135,058,738.12
  5. Step 5: Solve for x
    x = 135,058,738.12/18,120.54
  6. Step 6: Final answer
    x = 7,453.35

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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.