HOW DOES SOCRATES REFINE THE DEFINITION OF MODERATION IN BOOK IV? IS THIS ARGUME

How does Socrates refine the definition of moderation in book IV? Is this argument used anywhere else in the text? Include Citation ONLY from the book the Republic of Plato by Allan Bloom, refer to the citations with the margin numbers. (Example: 401 a, 401 d)
Give 3-4 paragraphs and ABSOLUTELY ZERO use of the web or outside sources, even inadvertent use of other sources will result in an immediate 0!