Based on the table below and the principle of diminishing returns to capital, then total packages wrapped when a fourth machine is installed must be less than ________ packages. 
Definitions:
Empathy
The ability to understand and share the feelings of another individual, often considered a critical skill in effective sales and customer service.
Service Quality
An evaluation of how well a delivered service matches the customer’s expectations.
Customer Contact Audit
A systematic examination of a company's points of interaction with its customers to ensure effective and positive engagement.
Interaction
The action or influence of things on each other.
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