[
  "For equivalent three-term ratios, find the multiplier that links one known pair of corresponding terms. Apply it to all others.",
  "The middle term changed from 2 to 10: 10 / 2 = 5, so multiply by 5. First: 11 x 5 = 55. Third: 7 x 5 = 35.",
  "The missing terms are 55 and 35. So 55 : 10 : 35 = 11 : 2 : 7."
]