6. The second and fourth terms of a geometric series are 7.2 and 5.832 respectively.
The common ratio of the series is positive.
For this series, find
- the common ratio,
- the first term,
- the sum of the first 50 terms, giving your answer to 3 decimal places,
- the difference between the sum to infinity and the sum of the first 50 terms, giving your answer to 3 decimal places.