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Finding the Fourth Proportional to 6,648.73, 9,174.87 and 3,664.55

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Solution

The fourth proportional to 6,648.73, 9,174.87 and 3,664.55 is: 5,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.73 : 9,174.87 = 3,664.55 : x
  2. Step 2: Convert to fraction form
    6,648.73/9,174.87 = 3,664.55/x
  3. Step 3: Cross multiply
    6,648.73x = 9,174.87 × 3,664.55
  4. Step 4: Simplify right side
    6,648.73x = 33,621,792.80
  5. Step 5: Solve for x
    x = 33,621,792.80/6,648.73
  6. Step 6: Final answer
    x = 5,056.88

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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.