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Finding the Fourth Proportional to 18,138.43, 25,027.87 and 10,180.99

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Solution

The fourth proportional to 18,138.43, 25,027.87 and 10,180.99 is: 14,047.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.43 : 25,027.87 = 10,180.99 : x
  2. Step 2: Convert to fraction form
    18,138.43/25,027.87 = 10,180.99/x
  3. Step 3: Cross multiply
    18,138.43x = 25,027.87 × 10,180.99
  4. Step 4: Simplify right side
    18,138.43x = 254,808,318.15
  5. Step 5: Solve for x
    x = 254,808,318.15/18,138.43
  6. Step 6: Final answer
    x = 14,047.98

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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.