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				Wow!
			 
			 
			
		
		
		
			I doubt it's a bearing but something is broke.  I'm afraid you're going to have to get underneath for a further inspection. 
 
You might try lifting the rear of the vehicle and turning the tire to see if you still have noise. 
 
It could be a busted CV joint or other half axle related item.
		 
		
		
		
		
		
		
		
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