Growling from the front, becomes more apparent when slowing down. I tried shifting the car into neutral when slowing down and there was no change in the growling noise.

SOURCE: growling noise under the hood that increases with

Could be air filter or system. Also possible it may be a vacuum leak..

SOURCE: there is a growling noise in the front end in

Sounds like a possible motor mount loose or broken, but hard to say.
Quick test:
Open hood, put car in drive, hold foot tight on brake pedal don't let off the brakes, accelerate slightly, if the mount is broken engine should lift up on the right side looking out the drivers side windshield, and show signs of the fan blades hitting the black plastic fan shroud in front of the radiator.
A car lift is the easiest and safest way to gain access for replacement of a broken engine mount.

SOURCE: growling noise at right front wheel when rolling

The probem is most likely a bad wheel bearing

SOURCE: really loud growling noise and

check your power steering fluid under the hood,sounds like your problem. make sure not to over fill it. look under the front of car after you've filled it up for leaks onto ground. you may have a bad steering hose. hope this helps and thank you for choosing fixya.com