Can I consolidate Time Machine backup archives from more than one HDs?

I have several HDs with Time Machine archives on them. One is 1TB, one is 500GB, and another is 250GB. I am out of space on all three and I am considering buying a 3TB HD. Can I consolidate all the existing archives? If so, how do I do that? If not, how can I search all three (or four if I buy the new drive) archives if the Time Machine preference only allow me to use one archive HD at a time?

In Time Machine Preferences click on search another drive.
Have a nice day.

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