CREATE TABLE table_1682026_6 (market_value__billion_$_ VARCHAR, sales__billion_$_ VARCHAR)

What is the market value of a company in billions that has 172.7 billion in sales?
SELECT market_value__billion_$_ FROM table_1682026_6 WHERE sales__billion_$_ = "172.7"
SELECT "market_value__billion_$_" FROM "table_1682026_6" WHERE "172.7" = "sales__billion_$_"