Linked from
The 23 pages that link to Marginal Utility, each with the reason it gives.
Supply and demandRelated: Buyers’ marginal benefit helps explain how much they are willing to pay.
Utility functionBroader topic: Its rate of change helps characterize trade-offs between goods.
ScarcityRelated: It helps explain how people rank competing uses for limited resources.
Willingness to payRelated: The value of an extra unit often falls as a buyer consumes more.
Carl MengerRelated: Menger used the importance of the next available unit to explain economic value.