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Finding the Fourth Proportional to 18,628.88, 27,935.94 and 8,233.36

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Solution

The fourth proportional to 18,628.88, 27,935.94 and 8,233.36 is: 12,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.88 : 27,935.94 = 8,233.36 : x
  2. Step 2: Convert to fraction form
    18,628.88/27,935.94 = 8,233.36/x
  3. Step 3: Cross multiply
    18,628.88x = 27,935.94 × 8,233.36
  4. Step 4: Simplify right side
    18,628.88x = 230,006,650.96
  5. Step 5: Solve for x
    x = 230,006,650.96/18,628.88
  6. Step 6: Final answer
    x = 12,346.78

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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.