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Finding the Fourth Proportional to 18,896.53, 28,343.85 and 7,049.37

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Solution

The fourth proportional to 18,896.53, 28,343.85 and 7,049.37 is: 10,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.53 : 28,343.85 = 7,049.37 : x
  2. Step 2: Convert to fraction form
    18,896.53/28,343.85 = 7,049.37/x
  3. Step 3: Cross multiply
    18,896.53x = 28,343.85 × 7,049.37
  4. Step 4: Simplify right side
    18,896.53x = 199,806,285.87
  5. Step 5: Solve for x
    x = 199,806,285.87/18,896.53
  6. Step 6: Final answer
    x = 10,573.71

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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.