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Finding the Fourth Proportional to 18,558.52, 27,837.78 and 8,704.56

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Solution

The fourth proportional to 18,558.52, 27,837.78 and 8,704.56 is: 13,056.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.52 : 27,837.78 = 8,704.56 : x
  2. Step 2: Convert to fraction form
    18,558.52/27,837.78 = 8,704.56/x
  3. Step 3: Cross multiply
    18,558.52x = 27,837.78 × 8,704.56
  4. Step 4: Simplify right side
    18,558.52x = 242,315,698.03
  5. Step 5: Solve for x
    x = 242,315,698.03/18,558.52
  6. Step 6: Final answer
    x = 13,056.85

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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.