DislikedLOL... I teach diving all day today... so not really time as well.
But I would be surprised if you can find an example of a secondary pair where the multiplication of the majors doesn't work.
Other example: EURUSD - USDCHF
These pairs are moving in a pretty precise inverted direction.
That's why the multiplication gives a similar result at all times, and that's why the EURCHF nearly ever moves far.
But if you have an example... I'm open to learn
Don't want to enter in an argument here... sorryIgnored
If the US govt. sells 1000 GMC army trucks to Australia. At some point there is a currency transaction. A sale that big would affect the market in some degree but it only affects the aud/usd not nzd/uzd or aud/nzd. The market moves but are not coordinated when that transaction goes down. Each currency pair is independent from each other even though they can move similar at times. You do not know what business is being done between two countries and you cant relegate it to a math formula. That is my point.