Here is the silhoutte of the original "stubby" Boeing 727, from the same website where you found your silhoutte:
Boeing 727
Now, look at the trailing edge of the "right wing" in the "spy satellite" pic. From the "wingtip" to the "fuselage," as you traverse the trailing edge, it sweeps to the rear --- that amount of curve does not match either the Boeing 727's trailing edge curve or the Boeing 720 trailing edge curve.
The leading edge of the "right wing" does not match the Boeing 727.
The leading edge of the "right wing" does have some resemblance to the Boeing 720; but again, the trailing edge does not have the sweep seen in the pic.
http://www.aerosite.net/tu154.htm