Final answer:
The question does not provide necessary information to determine the current flowing through resistor R4.
Step-by-step explanation:
The current flowing through resistor R4 can be found by applying Ohm's Law. Ohm's Law states that the current flowing through a resistor is equal to the voltage across the resistor divided by the resistance of the resistor. In this case, we need to know the voltage across R4 and its resistance value.
Unfortunately, the question does not provide the voltage across R4 or its resistance value. Therefore, we are unable to determine the current flowing through R4.
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