For some non-zero real values of a, b and c, it is given that \(\left|\frac{c}{a}\right| = 4\), \(\left|\frac{a}{b}\right| = \frac{1}{3}\) and \(\frac{b}{c} = -\frac{3}{4}\). If ac > 0, then \(\left(\frac{b+c}{a}\right)\) equals