What is interproportion?

Odd nom divisible by 5 between 10 and 20? How many grams is 3200 milligrams? If a train leaves Brooklyn at 12 47pm traveling at 383 mph and at the same time one leaves Denver traveling at 417 mph at what time and where will they meet? 3 over 1 equals what over 2? What is 8 divided by 373? How can you compare lengths within the customary system or the metric system? How much meters is 3 kilometers? What is 198 inches in feet? What is the root of a quadratic equation? How would you write 15.308 in expanded form? What is the cube of a box with a length of 18.5 inches a width of 12.59 inches and a height of 12.99 inches? Two pairs of consecutive angles are supplementary? What is the most common 4 digit passcode? What is 200 times 10 plus 9? How do you spell 0000000? Using laptop on plane? How an isosceles trapezoid is related to an isosceles triangle? How do you write 07 in roman numerals? What is relation between Cc and milligram measurement? What is 9999.9 to the nearest 100 in math?