How long was his third marriage ?

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A man during his life had three wives
A man during his life had three wives.

His first wife passed when he had been
then married half his life.

Six years later he married again.
This marriage only lasted a third the
length of his first.

He remarried within weeks and lived
with her the remainder of his life.
His last marriage lasted 3 years more
than his other marriages combined.

He died at age 86.

How long was his third marriage ?

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