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Finding the Fourth Proportional to 18,472.56, 27,719.88 and 6,786.96

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Solution

The fourth proportional to 18,472.56, 27,719.88 and 6,786.96 is: 10,184.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.56 : 27,719.88 = 6,786.96 : x
  2. Step 2: Convert to fraction form
    18,472.56/27,719.88 = 6,786.96/x
  3. Step 3: Cross multiply
    18,472.56x = 27,719.88 × 6,786.96
  4. Step 4: Simplify right side
    18,472.56x = 188,133,716.76
  5. Step 5: Solve for x
    x = 188,133,716.76/18,472.56
  6. Step 6: Final answer
    x = 10,184.50

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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.