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Finding the Fourth Proportional to 27,690.99, 38,255.25 and 18,153.54

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Solution

The fourth proportional to 27,690.99, 38,255.25 and 18,153.54 is: 25,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.99 : 38,255.25 = 18,153.54 : x
  2. Step 2: Convert to fraction form
    27,690.99/38,255.25 = 18,153.54/x
  3. Step 3: Cross multiply
    27,690.99x = 38,255.25 × 18,153.54
  4. Step 4: Simplify right side
    27,690.99x = 694,468,211.09
  5. Step 5: Solve for x
    x = 694,468,211.09/27,690.99
  6. Step 6: Final answer
    x = 25,079.21

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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.