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Finding the Fourth Proportional to 3,906.24, 5,390.04 and 2,334

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Solution

The fourth proportional to 3,906.24, 5,390.04 and 2,334 is: 3,220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.24 : 5,390.04 = 2,334 : x
  2. Step 2: Convert to fraction form
    3,906.24/5,390.04 = 2,334/x
  3. Step 3: Cross multiply
    3,906.24x = 5,390.04 × 2,334
  4. Step 4: Simplify right side
    3,906.24x = 12,580,353.36
  5. Step 5: Solve for x
    x = 12,580,353.36/3,906.24
  6. Step 6: Final answer
    x = 3,220.58

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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.