
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A rod with a length of four meters has weights attached as follows: $20 \mathrm{~kg}$ at one end, and at distances of one, two, and three meters from that end, weights of $30, 40, 50$ $\mathrm{kg}$ respectively. Additionally, a weight of $60 \mathrm{~kg}$ is attached at the other end. Where should the rod be supported to remain balanced, assuming the rod's own weight is negligible?

Present the answer in LaTex format: \boxed{Your answer}
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