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Finding the Fourth Proportional to 3,906.34, 5,859.44 and 984.64

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Solution

The fourth proportional to 3,906.34, 5,859.44 and 984.64 is: 1,476.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.34 : 5,859.44 = 984.64 : x
  2. Step 2: Convert to fraction form
    3,906.34/5,859.44 = 984.64/x
  3. Step 3: Cross multiply
    3,906.34x = 5,859.44 × 984.64
  4. Step 4: Simplify right side
    3,906.34x = 5,769,439.00
  5. Step 5: Solve for x
    x = 5,769,439.00/3,906.34
  6. Step 6: Final answer
    x = 1,476.94

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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.