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Finding the Fourth Proportional to 66,609.97, 91,919.03 and 36,396.33

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Solution

The fourth proportional to 66,609.97, 91,919.03 and 36,396.33 is: 50,225.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.97 : 91,919.03 = 36,396.33 : x
  2. Step 2: Convert to fraction form
    66,609.97/91,919.03 = 36,396.33/x
  3. Step 3: Cross multiply
    66,609.97x = 91,919.03 × 36,396.33
  4. Step 4: Simplify right side
    66,609.97x = 3,345,515,167.18
  5. Step 5: Solve for x
    x = 3,345,515,167.18/66,609.97
  6. Step 6: Final answer
    x = 50,225.44

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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.