Multiples approach and Alfred Marshall's theory: synthesis and hypothesis

The paper presents an economic model, which shows how a company's net profit can affect a peer company's value. The model continues the tradition of the neoclassical synthesis: it integrates, inter alia, the multiples approach and the theory of demand and supply, together with Deirdre McCloskey's some methodological ideas. The writing is aimed at anyone who is interested in microeconomics and the valuation theory.