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Motorola Quarterly Earnings Rise  CHICAGO (Reuters) - Motorola Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=MOT.N target=/stocks/quickinfo/fullquote"&gt;MOT.N&lt;/A&gt;, the world's No.  2 maker of cell phones, on Tuesday said its quarterly profit  more than tripled, as sales rose 26 percent, driven in part by  a host of new handset models and cost controls. 