Theoretical implications of the galactic radial acceleration relation of
  McGaugh, Lelli, and Schombert
  Velocities in stable circular orbits about galaxies, a measure of centripetal
gravitation, exceed the expected Kepler/Newton velocity as orbital radius
increases. Standard LCDM attributes this anomaly to galactic dark matter.
McGaugh et al have recently shown for 153 disc galaxies that observed radial
acceleration is an apparently universal function of classical acceleration
computed for observed galactic baryonic mass density. This is consistent with
the empirical MOND model, not requiring dark matter. It is shown here that
suitably constrained LCDM and conformal gravity (CG) also produce such a
universal correlation function. LCDM requires a very specific dark matter
distribution, while the implied CG nonclassical acceleration must be
independent of galactic mass. All three constrained radial acceleration
functions agree with the empirical baryonic $v^4$ Tully-Fisher relation.
Accurate rotation data in the nominally flat velocity range could distinguish
between MOND, LCDM, and conformal gravity.
