1. To find the missing divisor, set up the equation: \(\frac { 450000} { x} = 4500\).
2. Solve for \(x\):
   \[x = \frac { 450000} { 4500} \]
3. Simplify the division:
   \[x = 100\]
   So, the missing divisor is 100.

Supplemental Knowledge

Division is one of four basic operations in arithmetic. To perform it effectively and simplify expressions effectively is key for mathematicians.

1. Division:
   • The process of determining how many times one number (the divisor) is contained within another number (the dividend).
   • Expressed as \(\text { dividend} \div \text { divisor} = \text { quotient} \).
2. Simplification:
   • Reducing an expression to its simplest form.
   • Ensures clarity and ease of understanding.

From Concepts to Reality

Division is used in everyday life from splitting bills among friends to calculating rates over time. If you had 450,000 units to distribute equally among 100 stores, division would help determine exactly how many were assigned per location.

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