Final answer:
Speeding-related crashes accounted for approximately 40.5% of all fatal crashes in 2008, with a total number of 13,846 out of 34,172 fatal crashes.
Step-by-step explanation:
In 2008, speeding-related crashes accounted for a significant percentage of all fatal crashes with a staggering figure of 13,846. To determine the percentage, we can use the total number of fatal motor vehicle traffic crashes provided by Table 1.19. The table indicates that in 2008, there were 34,172 total fatal crashes. Therefore, by dividing the number of speeding-related crashes (13,846) by the total number of crashes (34,172) and multiplying by 100, we can calculate the exact percentage.
The calculation would be (13,846 / 34,172) × 100 = 40.5%. Hence, speeding-related crashes accounted for approximately 40.5% of all fatal crashes in 2008.