I researched for A. Rapaport and a few names come up one of which being Albert Josef Rapaport. He came up with the correct birth year, similar name, and address. I also searched for Abram Rappaport, Alber Rappaport, and Albert Jozef Rappoport and found that they all have the same birthday and address. I believe that all of these boys are the same person.
I was able to find that Albert Jozef Rappoport was deported to Chelmno in 1942 I believe. Using a secondary source about Chelmno I found that between January and May of 1942 the Germans deported more than 54,000 Lodz Jews to be killed at Chelmno. The source also states that between September 1942 and May 1944 there were not very many deportations which leads me to believe that Albert Jozef Rappoport was killed in 1942. I also found that Albert Josef Rapaport had a registration for a change of address on June 7th 1941.