For what it's worth I'm a 25-year-old Australian who never encountered this specific syntax in schooling (it was always phrased "as <x> is to what?"), but am st

For what it's worth I'm a 25-year-old Australian who never encountered this specific syntax in schooling (it was always phrased "as <x> is to what?"), but am still very familiar with it from general interactions online. It's probably just a matter of how strongly your immediate social circle feels about formal logic.