In the recent past, Carra, et al. derived a sum rule for electric dipole transitions in a single ion model that could be used to extract an elementally-specific spin-magnetic-moment (μSPIN) from magnetic x-ray circular dichroism (MXCD) spectra. Earlier, we proposed the utilization of a branching ratio analysis for the determination of μSPIN, based upon a simplified oneelectron, atomic picture which assumed complete orbital quenching. Here, it will be shown that these two approaches are essentially related in the case of 3d ferromagnetic materials. Both methods are based upon a comparison of the integrated intensity in the L3(J=3/2) white line peak versus the sum of the intensities in the L3(J=3/2) and L2(J=l/2) peaks, after background removal. An error estimate will also be presented. A more complete description of our work is under preparation.