Mon, Aug 31, 2015, 6:51 PM SGT - Singapore Markets closed
15. Sao Paulo (84,200 millionaires)
Brazil's largest city is home to a third of the country's millionaires.
Sao Paulo is arguably the most important city in South America for banking and commerce.
By Rajeshni Naidu-Ghelani
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There are now over 200 million people across the globe living and working abroad, more than double the …