Tension in parallel springs [closed]

A block of mass $200$kg is connected to a horizontal ceiling by four identical light elastic ropes, each having natural length $7$m and stiffness $180$N/m. It is also connected to the floor by a single light elastic rope having stiffness $80$N/m. All five ropes are stretched and vertical, and air resistance is neglected.

Find the tension in one of the upper ropes.

I know it's just $kx$, but I don't understand why it is not $\frac{kx}{4}$ because tension is shared between four ropes.

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migration rejected from math.stackexchange.comJun 17 '13 at 1:34

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closed as too localized by Brandon Enright, akhmeteli, Waffle's Crazy Peanut, Qmechanic♦Jun 17 '13 at 1:34

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