Scientific calculator
Evaluate arithmetic, powers, parentheses and common scientific functions.
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Math & calculators
Proportion calculator
Solve a : b = c : x for the missing fourth value.
Free to useProcessed on your device
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About this tool
Solve a : b = c : x for the missing fourth value.
How to use
- Enter a and b and c in the form.
- Choose the available options, then run proportion calculator.
- Review the result and copy or download it for your work.
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