Here it writes that nitrohydrochloric acid (possibly Aqua Regia) is of the ratio of $18:82$, which is $1:4.56$ in a simpler form. On Wikipedia and every other source i found the ratio $1:3$. So what's the truth behind this?
Also is Aqua Regis a valid way to call the mixture? On Wiktionary it says that this is a synomym of Aqua Regia but why would it have such a different ratio then?