To determine how many whole donuts Deborah will make in 5 hours using a proportion, we can set up the equation as follows:
\[ \frac{33 \text{ donuts}}{7 \text{ hours}} = \frac{x \text{ donuts}}{5 \text{ hours}} \]
Now, we can cross-multiply:
\[ 33 \cdot 5 = 7 \cdot x \]
This simplifies to:
\[ 165 = 7x \]
Next, we can solve for \( x \) by dividing both sides by 7:
\[ x = \frac{165}{7} \approx 23.57 \]
Since we are looking for the whole number of donuts, we round down, because Deborah can only make whole donuts.
Thus, she will make 23 whole donuts in 5 hours.