What should I use ?

Hi all,
So I need to know what will work for a 47K oms replacement, In a Dark sensing circuit I'v built, I need a 47 K oms Potentiometer Variable Resistor But where I live I can't find one, the closest would be 25K or 50K Would they work or will I need to source a 47K ?

Here is a Link to the circuit.
**broken link removed**

50K pot is perfect.

Ken

Thanks

Too late.