You could resize the slides using a macro like:
Code:
Sub Demo()
Dim sngWdth As Single, sngScale As Single, iShp As InlineShape
With ActiveDocument.Tables(1)
sngWdth = .Columns(1).Width
For Each iShp In .Range.InlineShapes
With iShp
.LockAspectRatio = True
sngScale = sngWdth / .Width
.Width = sngWdth
.Height = .Height * sngScale
End With
Next
.LeftPadding = 0
.RightPadding = 0
End With
End Sub