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Finding the Fourth Proportional to 66,413.19, 91,646.04 and 36,605.19

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Solution

The fourth proportional to 66,413.19, 91,646.04 and 36,605.19 is: 50,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.19 : 91,646.04 = 36,605.19 : x
  2. Step 2: Convert to fraction form
    66,413.19/91,646.04 = 36,605.19/x
  3. Step 3: Cross multiply
    66,413.19x = 91,646.04 × 36,605.19
  4. Step 4: Simplify right side
    66,413.19x = 3,354,720,706.95
  5. Step 5: Solve for x
    x = 3,354,720,706.95/66,413.19
  6. Step 6: Final answer
    x = 50,512.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.