Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_19112_3 (world_rank VARCHAR, market_value__billion_$_ VARCHAR)
### Question:
Name the world rank for market value 17.2
### Answer:
SELECT world_rank FROM table_19112_3 WHERE market_value__billion_$_ = "17.2"