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Finding the Fourth Proportional to 22,421.21, 33,634.09 and 7,631.17

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Solution

The fourth proportional to 22,421.21, 33,634.09 and 7,631.17 is: 11,447.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.21 : 33,634.09 = 7,631.17 : x
  2. Step 2: Convert to fraction form
    22,421.21/33,634.09 = 7,631.17/x
  3. Step 3: Cross multiply
    22,421.21x = 33,634.09 × 7,631.17
  4. Step 4: Simplify right side
    22,421.21x = 256,667,458.59
  5. Step 5: Solve for x
    x = 256,667,458.59/22,421.21
  6. Step 6: Final answer
    x = 11,447.53

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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.