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The population given is 17,400,000, and we need to express this in scientific notation.

To convert a number to scientific notation:
1. Move the decimal point so that there is only one non-zero digit to the left of the decimal. 
   - For 17,400,000, this would be 1.74.
2. Count how many places the decimal moved to the right. In this case, it moved 7 places, which gives us the exponent.
   
Thus, \( 17,400,000 \) in scientific notation is \( 1.74 \times 10^7 \).

The correct option is: **1.74 × 10⁷**.

Would you like further details or have any questions?

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Here are five related questions to deepen your understanding:
1. How do you convert a decimal number like 0.00056 into scientific notation?
2. What is the purpose of using scientific notation for large or small numbers?
3. How can you express the number \( 5.2 \times 10^5 \) in standard form?
4. What would the number \( 3.45 \times 10^{-4} \) look like in standard notation?
5. Can you explain the difference between scientific notation and standard notation?

**Tip:** When converting to scientific notation, always check that the number before the multiplication sign (called the coefficient) is between 1 and 10.

The population of a South American country is about 17,400,000. Which expression shows this number in scientific notation?

This math problem shows how to convert the population number 17,400,000 into scientific notation. The correct scientific notation is 1.74 × 10⁷, following the standard method for expressing large numbers. Ideal for students in Grades 6-8.

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