Which two ways can values be entered into the scale box to set map scale in ArcGIS Pro?

Entering values into the scale box in ArcGIS Pro allows you to set the scale of the map for visualization and analysis. The correct way to express scale is by using the representative fraction format or a ratio, both of which indicate the relationship between a unit of measurement on the map and the equivalent number of units on the ground.

The value "1:100000" is a representative fraction that shows that one unit on the map represents 100,000 units in the real world. This expression is precise and widely understood in cartography, making it a valid way to input scale values.

In contrast, other options do not conform to the accepted formats for expressing scale in ArcGIS. The phrase "One to one hundred," for instance, is less standard and might not be appropriately interpreted or accepted as a scale input in the software. The input "1 mile" lacks the necessary conversion to a representative fraction or ratio that connects map units to ground units, which is essential for accurate scaling. Finally, "100000:1," while potentially interpretable, is not the most common or user-friendly way to convey scale in this context. The standard format seen often by users is the form "1:100000," thus making it the correct choice.