
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
An equilateral triangle has sides of length 3 units. A second equilateral triangle is formed having sides that are $125\%$ of the length of the sides of the first triangle. This process is continued, with each new triangle having sides $125\%$ the length of its predecessor, until five equilateral triangles exist. What will be the percent increase in the perimeter from the first triangle to the fifth triangle? Express your answer to the nearest tenth.

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