Figure 4-4 (page 80) shows the implications of local employment for the size of cities with different levels of export employment. Suppose that in a city with export employment of 1 million, each export job supports half a job in local industry. If so, total employment in the city is 1.5 times its export employment, or 1.5 million. We know that a larger city can support a wider range of consumer goods. Suppose that in a city with export employment of 3 million, each export job supports one local job. As shown in Figure 4-4, total employment in such a city is 6 million (3 million export jobs plus 3 million local jobs). Finally, suppose that in a city with 6 million export job, each export job supports two local jobs. In this case, total employment is 18 million (6 million export jobs plus 12 million local jobs).