#proportionality__proportion  the quotient obtained when the magnitude of a part is divided by the magnitude of the whole
  supertype:  #quotient.ratio  the ratio of two quantities to be divided
  subtype:  #content.proportionality  #scale.proportionality  #golden_section  #commensurateness  #percent  #batting_average.proportionality
  part:  #proportional  one of the quantities in a mathematical proportion

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