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Finding the Fourth Proportional to 66,388.44, 91,614.87 and 36,173.97

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Solution

The fourth proportional to 66,388.44, 91,614.87 and 36,173.97 is: 49,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,388.44 : 91,614.87 = 36,173.97 : x
  2. Step 2: Convert to fraction form
    66,388.44/91,614.87 = 36,173.97/x
  3. Step 3: Cross multiply
    66,388.44x = 91,614.87 × 36,173.97
  4. Step 4: Simplify right side
    66,388.44x = 3,314,073,403.01
  5. Step 5: Solve for x
    x = 3,314,073,403.01/66,388.44
  6. Step 6: Final answer
    x = 49,919.44

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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.