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Finding the Fourth Proportional to 18,662.90, 25,754.42 and 10,165.12

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Solution

The fourth proportional to 18,662.90, 25,754.42 and 10,165.12 is: 14,027.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.90 : 25,754.42 = 10,165.12 : x
  2. Step 2: Convert to fraction form
    18,662.90/25,754.42 = 10,165.12/x
  3. Step 3: Cross multiply
    18,662.90x = 25,754.42 × 10,165.12
  4. Step 4: Simplify right side
    18,662.90x = 261,796,719.00
  5. Step 5: Solve for x
    x = 261,796,719.00/18,662.90
  6. Step 6: Final answer
    x = 14,027.65

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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.