Question 396096
I use what is called a "constant of proportionality" called {{{k}}}
I write an equation:
{{{P = k*N}}}
This is read as " The number of people is proportional to 
the number of cans.
given:
{{{57 = k*19893}}}
{{{k = .0028653}}}
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Now I can write:
{{{13290007 = .0028653*N}}}
{{{N = 4638260217}}}
4,638,260,217 cans are used