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Finding the Fourth Proportional to 3,936.47, 5,908.54 and 3,068.41

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Solution

The fourth proportional to 3,936.47, 5,908.54 and 3,068.41 is: 4,605.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.47 : 5,908.54 = 3,068.41 : x
  2. Step 2: Convert to fraction form
    3,936.47/5,908.54 = 3,068.41/x
  3. Step 3: Cross multiply
    3,936.47x = 5,908.54 × 3,068.41
  4. Step 4: Simplify right side
    3,936.47x = 18,129,836.23
  5. Step 5: Solve for x
    x = 18,129,836.23/3,936.47
  6. Step 6: Final answer
    x = 4,605.61

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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.