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Finding the Fourth Proportional to 66,469.20, 99,716.60 and 33,637.20

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Solution

The fourth proportional to 66,469.20, 99,716.60 and 33,637.20 is: 50,462.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.20 : 99,716.60 = 33,637.20 : x
  2. Step 2: Convert to fraction form
    66,469.20/99,716.60 = 33,637.20/x
  3. Step 3: Cross multiply
    66,469.20x = 99,716.60 × 33,637.20
  4. Step 4: Simplify right side
    66,469.20x = 3,354,187,217.52
  5. Step 5: Solve for x
    x = 3,354,187,217.52/66,469.20
  6. Step 6: Final answer
    x = 50,462.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.