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Finding the Fourth Proportional to 22,361.78, 33,399.78 and 20,250.38

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Solution

The fourth proportional to 22,361.78, 33,399.78 and 20,250.38 is: 30,246.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.78 : 33,399.78 = 20,250.38 : x
  2. Step 2: Convert to fraction form
    22,361.78/33,399.78 = 20,250.38/x
  3. Step 3: Cross multiply
    22,361.78x = 33,399.78 × 20,250.38
  4. Step 4: Simplify right side
    22,361.78x = 676,358,236.92
  5. Step 5: Solve for x
    x = 676,358,236.92/22,361.78
  6. Step 6: Final answer
    x = 30,246.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.