interdependent
mutualist
mutually beneficial

There is a mutually beneficial system where they all work for each other.

May both countries continue to be mutually beneficial in their relationships.

They sent it to us because we have a mutually beneficial relationship.

So there is a sense in which both companies and banks have found the financial system mutually beneficial.

Building off of this mutually beneficial economic relationship, a political and military association began to form.

The story tells of the mutually beneficial relationship between these groups.

This is about being a mutually beneficial relationship after all.

"We put in a lot of time to figure out what would be a mutually beneficial deal," he said.

This was a simple beginning to a mutually beneficial relationship.

That way, it is mutually beneficial to the partners involved.