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Flyer and poster aspect ratio summary

FormatDimensionsSimplified ratio

 x:100

8.5 × 11 

portrait

8.5 × 11

17:22

77.27:100

4:5

—

4:5

80:100

2:3

 —

2:3

66.67:100

8.5 × 11

quartered

4.25 × 5.5

17:22

77.27:100

8.5 x 11 

landscape

split 

horizontally

11 × 4.25

44:17

258.82:100

8.5 × 11 

portrait

split

horizontally

8.5 × 5.5

17:11

154.55:100

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