These growing companies can help you build lasting wealth.The easiest way to build wealth is to persistently buy shares of growing companies in the stock market and be patient. There is a high correlation between a company's growth and its stock's performance over many years.And that's why these fool.com contributors believe MercadoLibre (MELI 3.08%), e.l.f. Beauty (ELF 0.95%), and Sweetgreen (SG 1.13%) are no-brainer buys right now. Read on to find out more about these highfliers, and why they could be poi ...