It's easier for me to work with finished measurements then add the seam allowance back in.
The center is 24" finished - (24.5" unfinished).
Add a coping strip to all 4 sides of 0.75" finished - (1.25" cut).
Quilt will now measure 25.5" finished - (26" unfinished).
Your 3.5" unfinished 4 patches will finish at 4.25" on point.
(4.25" X 6 = 25.5")
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