Suppose a charity received a donation of $21.7 million. If this represents 38% of the charity's donated funds, what is the total amount of its donated funds? Round your answer to the nearest million dollars.

the total amount of the funds is say "x", therefore, "x" is the 100% of the whole amount.

now, we know that 21.7 million is 38%, what is "x" anyway?

[tex]\bf \begin{array}{ccll} \stackrel{millions}{amount}&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ x&100\\ 21.7&38 \end{array}\implies \cfrac{x}{21.7}=\cfrac{100}{38}\implies x=\cfrac{21.7\cdot 100}{3}[/tex]