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Finding the Fourth Proportional to 25,103.80, 34,639.38 and 14,491.38

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Solution

The fourth proportional to 25,103.80, 34,639.38 and 14,491.38 is: 19,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,103.80 : 34,639.38 = 14,491.38 : x
  2. Step 2: Convert to fraction form
    25,103.80/34,639.38 = 14,491.38/x
  3. Step 3: Cross multiply
    25,103.80x = 34,639.38 × 14,491.38
  4. Step 4: Simplify right side
    25,103.80x = 501,972,418.54
  5. Step 5: Solve for x
    x = 501,972,418.54/25,103.80
  6. Step 6: Final answer
    x = 19,995.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.