A solid cube is held completely submerged in a container filled with a certain oil of density \( \rho \). The cube is then removed and held completely submerged in a container filled with a concentrated syrup of density \( 3\rho \). If \( F_{oil} \) is the magnitude of the buoyant force exerted on the cube by the oil and \( F_{syrup} \) is the magnitude of the buoyant force exerted on the cube by the syrup, what is the ratio \( \dfrac{F_{syrup}}{F_{oil}} \)?