The following table contains data about the inventory for five items at Jones Corporation. Complete the missing item Compute an average inventory turnover.

Note: Round your inventory turnover values to $3$ decimal places.

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Answer is complete and correct.

$\backslash$table$[[\backslash$table$[[$Item$],[$Number$]],\backslash$table$[[$Beginning$],[$Unit$],[$Inventory$]],\backslash$table$[[$Ending$],[$Unit$],[$Inventory$]],\backslash$table$[[$Average$],[$Unit$],[$Inventory$]],\backslash$table$[[$Annual$],[$Unit$],[$Sales$]],\backslash$table$[[$Inventory$],[$Turnover$]]],[1,170,000,140,000,155,000,420,000,2\mathrm{.}709\frac{O}{?}$