Four Fours/Lemmata/Three Fours/72

Puzzle

Using exactly $3$ instances of the number $4$, the task is to write an expression for $72$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$72 = \dfrac {4! + 4!} {\sqrt {. \dot 4} }$

Solution $2$

$72 = 4! + 4! + 4!$

Also see

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