Australia retained the Women's Ashes outright against England with one match to spare following their five-wicket victory in the second one-day international on Sunday.
Australia captain Meg Lanning won the toss and opted to bowl first, with England all out for a disappointing total of 129 in the 46th over.
Bowler Tahlia McGrath claimed the last three wickets of England's innings, securing 3-4 from her 3.2 overs.
Ellyse Perry was the star of the match with both bat and ball, producing a top score for Australia of 40 following her impressive 3-12 bowling figures.
Australia made quick work of reaching the 130 they needed for victory, doing so with 90 balls to spare. The comprehensive win will frustrate the English, who are yet to beat their Aussie counterparts in this series which has included a one-off test and Twenty20 matches.
Australia will be among the favourites in the ODI Women's World Cup in New Zealand, which is set to begin on 4 March.