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Finding the Fourth Proportional to 19,286.76, 26,620.62 and 10,908.12

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Solution

The fourth proportional to 19,286.76, 26,620.62 and 10,908.12 is: 15,055.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.76 : 26,620.62 = 10,908.12 : x
  2. Step 2: Convert to fraction form
    19,286.76/26,620.62 = 10,908.12/x
  3. Step 3: Cross multiply
    19,286.76x = 26,620.62 × 10,908.12
  4. Step 4: Simplify right side
    19,286.76x = 290,380,917.43
  5. Step 5: Solve for x
    x = 290,380,917.43/19,286.76
  6. Step 6: Final answer
    x = 15,055.97

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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.