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In this paper, we present a computational method to fuzzy group decision making problems. A function that satisfies the properties of fuzzy ideal of semiring of positive integers is also investigated in the present paper and is used for idealizing the group preference matrix obtained by different decision makers. The proposed method appears in form of simple computational algorithms to idealize the group preference matrix and calculating total order of preference relation. Finally, the suitability of the proposed method is shown by taking an example of a human resource development (HRD) event, where it is used to select the best possible candidate by different decision makers.