A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length?

Explanation

To solve the problem step by step, we need to find the actual length of the bacteria and then determine its enlarged length when the photograph is enlarged 20,000 times.

### Step 1: Understand the relationship between enlargement and actual length
The problem states that when the photograph of the bacteria is enlarged 50,000 times, it measures 5 cm. We can set up a direct proportion to find the actual length of the bacteria.

### Step 2: Set up the proportion
Let the actual length of the bacteria be \( x \) cm. The relationship can be expressed as:
\[
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