Hey Swordfish,
It's awesome that you're taking full advantage of QuickBooks Online's powerful multi-currency features. The system is designed to simplify your bookkeeping, regardless of how many currencies you do business in. I'll be happy to help you record this bill and the payments.
The best way to ensure accuracy when matching foreign currency transactions is to make sure they're identical. Since your bill has a different amount, I'd recommend opening it to adjust the posted exchange rate. As exchange rates change often throughout the day, and different institutions include different spreads, it's important to make sure they match. This ensures your exchange gains and losses will be calculated correctly. Once that's done, you can easily record the three different payments by similarly making sure the exchange rate is accurate. For additional assistance with this, don't hesitate to reach out to an agent using one of the methods below. They'll be able to guide you in real-time.
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Don't be afraid to get in touch! I'm confident we'll have no problem getting these matched.