<p>Three identical spheres each of mass 2M are placed at the corners of a right angled triangle with mutually perpendicular sides equal to 4m&nbsp; each. Taking point of intersection of these two sides as origin, the magnitude of position vector of the centre of mass of the system is&nbsp;<span class="equation">\(\frac{4\sqrt{2}}{x}\)</span>, where the value of x is_____​​​​​​​</p>