Which Ratio has a Similar ISO A size of a3?
CREATE TABLE table_name_76 (ratio INTEGER, similar_iso_a_size VARCHAR)
SELECT AVG(ratio) FROM table_name_76 WHERE similar_iso_a_size = "a3"
### Context: CREATE TABLE table_name_76 (ratio INTEGER, similar_iso_a_size VARCHAR) ### Question: Which Ratio has a Similar ISO A size of a3? ### Answer: SELECT AVG(ratio) FROM table_name_76 WHERE similar_iso_a_size = "a3"