Put these steps for solving a related rates problem in the correct order.
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  1. Solve for the desired rate.
  2. Plug in any known values for the variables or rates of change.
  3. Identify the quantities that are changing, and assign them variables.
  4. Differentiate both sides of that equation with respect to time.
  5. Draw a picture (if possible).
  6. Find an equation that relates those quantities.