Final answer:
Businesses that have a common mission and foster mutual growth participate in a collaborative relationship, which is beneficial for both parties involved.
Step-by-step explanation:
The type of relationship that exists between businesses that have a common mission and promote growth for both partners is a collaborative relationship. In a collaborative relationship, companies work together towards shared objectives and leverage each other's strengths to achieve a mutually beneficial outcome. This is distinct from competitive, transactional, or hierarchical relationships, where the focus is on competition, single exchanges, or structured levels of authority, respectively.
In nature, a similar concept exists known as mutualism, which is a symbiotic relationship where both of the coexisting species benefit from the interaction. This biological mutualism mirrors the oft-sought-after collaborative relationship in business, where companies seek to grow and succeed together.