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Finding the Fourth Proportional to 12,792.42, 17,629.92 and 9,249.48

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Solution

The fourth proportional to 12,792.42, 17,629.92 and 9,249.48 is: 12,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.42 : 17,629.92 = 9,249.48 : x
  2. Step 2: Convert to fraction form
    12,792.42/17,629.92 = 9,249.48/x
  3. Step 3: Cross multiply
    12,792.42x = 17,629.92 × 9,249.48
  4. Step 4: Simplify right side
    12,792.42x = 163,067,592.44
  5. Step 5: Solve for x
    x = 163,067,592.44/12,792.42
  6. Step 6: Final answer
    x = 12,747.20

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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.