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Finding the Fourth Proportional to 6,648.62, 9,175.31 and 3,664.56

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Solution

The fourth proportional to 6,648.62, 9,175.31 and 3,664.56 is: 5,057.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.62 : 9,175.31 = 3,664.56 : x
  2. Step 2: Convert to fraction form
    6,648.62/9,175.31 = 3,664.56/x
  3. Step 3: Cross multiply
    6,648.62x = 9,175.31 × 3,664.56
  4. Step 4: Simplify right side
    6,648.62x = 33,623,452.23
  5. Step 5: Solve for x
    x = 33,623,452.23/6,648.62
  6. Step 6: Final answer
    x = 5,057.21

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1.5x scale

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.