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Finding the Fourth Proportional to 3,906.64, 5,859.99 and 984.94

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Solution

The fourth proportional to 3,906.64, 5,859.99 and 984.94 is: 1,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.64 : 5,859.99 = 984.94 : x
  2. Step 2: Convert to fraction form
    3,906.64/5,859.99 = 984.94/x
  3. Step 3: Cross multiply
    3,906.64x = 5,859.99 × 984.94
  4. Step 4: Simplify right side
    3,906.64x = 5,771,756.86
  5. Step 5: Solve for x
    x = 5,771,756.86/3,906.64
  6. Step 6: Final answer
    x = 1,477.42

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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.