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## Homework Statement

Attached picture with the given variables and questions stated.

## Homework Equations

E = kq / (r^2)

## The Attempt at a Solution

I've taken found the linear electric field magnitudes in relationship to the point

q1 = 3.37e-9

q2 = 6.74e-9

q3 = 3.92e-9

r1 = .647m

r2 = 1.941m

E1 = (k*(q1))/(r1) = 72.3540189055

E2 = (k*(q2))/(r2) = 16.0789708679

I am having difficulty figuring out how to calculate the third vector into the total, any thoughts?