Andy Murray and Heather Watson combined to give Great Britain a 3-0 Hopman Cup whitewash of Germany but missed out on a place in the final in Perth.
On a morning when temperatures rose to 36 degrees, Watson beat Sabine Lisicki 6-3 6-4 before Murray overcame Alexander Zverev 6-3 6-4.
The pair then teamed up for a 6-3 6-4 win in the mixed doubles.
Australia Green qualified for Saturday's final after a mixed doubles third set tie-break win over France.
Britain needed a French victory to advance after losing on Wednesday to the Australia's Nick Kyrgios and Daria Gavrilova, who will now face Ukrainian pair Alexandr Dolgopolov and Elina Svitolina in the decider.