We have studied in this work the magnetic interactions above the Curie point T_c in La_0.4Re_0.1Ca_0.5MnO₃ (Re= La, Eu, Gd and Dy) polycrystalline manganites. The magnetic field dependence of magnetization M(H) curves above T_c shows strong evidence of the phase separated nature of our compounds. For Re=La, the presence of ferromagnetic interactions was detected in the temperature range 220-270K. For other rare earth substituted samples, M (H) curves indicate the persistence of charge ordered antiferromagnetic domains within the paramagnetic phase. The temperature dependence of the inverse of paramagnetic susceptibility reveals that all elaborated samples do not follow the Curie-Weiss law above T_c. The deviation from linearity increases with increasing the magnetic moment of substituent. In the case of Re=Eu, Gd and Dy, we have detected the presence of both ferromagnetic and charge ordered antiferromagnetic clusters in the paramagnetic phase, which confirms that the charge ordering characterizing the parent compound did not collapse by substitution.