So I had a leak from my upper radiator hose last week. Replace it right away then yesterday it started to leak from the bottom one. Replace that one and now it is leaking antifreeze some where else.
Because the coolant system is pressurized what you tend to find is that if you fix one leak the resulting increase in pressure in the system leads to another weaker spot failing - as @Solar Mike said in a comment this could easily be down to age. Coolant hoses are typically rubber and as rubber ages it grows less flexible, since the hoses are likely the same age they will tend to fail around the same sort of time.
It's probably not what you want to hear but you may just be better to bite the bullet and replace the entire set of hoses.