ConAgra Foods, Inc. (CAG) on Tuesday said it would acquire fellow packaged foods maker Ralcorp (RAH) for $4.95 billion in an all-cash deal. The $90 per-share offer represents a 28% upside to Ralcorp’s Monday closing price of $70.23. When including the assumption of RAH’s debt, the full value of the deal climbs to $6.8 billion. [...]