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Finding the Fourth Proportional to 18,440.53, 25,440.18 and 11,729.48

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Solution

The fourth proportional to 18,440.53, 25,440.18 and 11,729.48 is: 16,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.53 : 25,440.18 = 11,729.48 : x
  2. Step 2: Convert to fraction form
    18,440.53/25,440.18 = 11,729.48/x
  3. Step 3: Cross multiply
    18,440.53x = 25,440.18 × 11,729.48
  4. Step 4: Simplify right side
    18,440.53x = 298,399,911.32
  5. Step 5: Solve for x
    x = 298,399,911.32/18,440.53
  6. Step 6: Final answer
    x = 16,181.74

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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.