Yaakov Avinu lived for 147 years. Of these years, he lived for 20 years in Padan Aram with Lavan, and 17 years in Egypt. Total time in Eretz Yisrael, 110 years.
Yosef lived for 110 years.
Yosef was born in Padan Aram, and came to Eretz Yisrael when he was 6. He was sold to the Yishmaelim at the age of 17, never to live in Eretz Yisrael again, only visiting for Yaakov Avinu's burial. Total time he lived in Eretz Yisrael: 11 years, one tenth of his life.
Yaakov's time in Eretz Yisrael, aka Tzion, is equal to the lifetime of Yosef, whose name is equal in gematria to Tzion. But even so, Yosef still needed actual time in Tzion of one tenth of his life.
Rules for Halachic Decisions
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