wirable23 opened a new issue, #35576:
URL: https://github.com/apache/arrow/issues/35576
### Describe the bug, including details regarding any error messages,
version, and platform.
```
a = pa.array([545803904.0], type=pa.float32())
>>> a.cast(pa.decimal128(38, 18))
<pyarrow.lib.Decimal128Array object at 0x000001DE8FF59840>
[
545803886.966396699654750208
]
>>>
```
While encoding of decimal128 and float32 is very different, the difference
after the cast seems much larger than expected.
### Component(s)
Python
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