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Finding the Fourth Proportional to 12,896.38, 19,377.78 and 12,535.12

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Solution

The fourth proportional to 12,896.38, 19,377.78 and 12,535.12 is: 18,834.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.38 : 19,377.78 = 12,535.12 : x
  2. Step 2: Convert to fraction form
    12,896.38/19,377.78 = 12,535.12/x
  3. Step 3: Cross multiply
    12,896.38x = 19,377.78 × 12,535.12
  4. Step 4: Simplify right side
    12,896.38x = 242,902,797.63
  5. Step 5: Solve for x
    x = 242,902,797.63/12,896.38
  6. Step 6: Final answer
    x = 18,834.96

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