Thus Sri Rama is related to Krishna as Krishna’s Great Aunt’s descendant ( removed by Thirty Seven generations.
This means the information about Mandhata and Muchukunda was deliberate and people knew there is this discrepancy of longevity.
Mandhata. He was the Seventeenth King in the Lineage of Solar Dynasty. Sri Rama was the Fifty first in that Line.Mandhatha and Sri Rama were separated by eighteen Kings
Lord Shiva burnt the Tripura He had the Ashes that a portion of it fell in Kailash, and some in Amarkantak,Madhya Pradesh,.
This is also the place the Narmada River originates.
The presiding Deity of River Ganges visits this place, as the Legends would have it.