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Má roinntear PCC ar an ráta malairte ainmniúil idir dhá thír faightear innéacs na leibhéal praghsanna, ar féidir é a úsáid chun leibhéil chomparáideacha praghsanna tíortha a anailísiú.
A PPP divided by the nominal exchange rate between two countries produces a price level index (PLI), that can be used in analyses of countries' comparative price levels.