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Finding the Fourth Proportional to 18,661.73, 27,994.55 and 8,798.36

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Solution

The fourth proportional to 18,661.73, 27,994.55 and 8,798.36 is: 13,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.73 : 27,994.55 = 8,798.36 : x
  2. Step 2: Convert to fraction form
    18,661.73/27,994.55 = 8,798.36/x
  3. Step 3: Cross multiply
    18,661.73x = 27,994.55 × 8,798.36
  4. Step 4: Simplify right side
    18,661.73x = 246,305,944.97
  5. Step 5: Solve for x
    x = 246,305,944.97/18,661.73
  6. Step 6: Final answer
    x = 13,198.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.