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Finding the Fourth Proportional to 18,009.64, 27,028.14 and 11,767.96

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Solution

The fourth proportional to 18,009.64, 27,028.14 and 11,767.96 is: 17,660.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.64 : 27,028.14 = 11,767.96 : x
  2. Step 2: Convert to fraction form
    18,009.64/27,028.14 = 11,767.96/x
  3. Step 3: Cross multiply
    18,009.64x = 27,028.14 × 11,767.96
  4. Step 4: Simplify right side
    18,009.64x = 318,066,070.39
  5. Step 5: Solve for x
    x = 318,066,070.39/18,009.64
  6. Step 6: Final answer
    x = 17,660.88

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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.