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Finding the Fourth Proportional to 22,354.71, 33,665.81 and 20,361.84

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Solution

The fourth proportional to 22,354.71, 33,665.81 and 20,361.84 is: 30,664.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,354.71 : 33,665.81 = 20,361.84 : x
  2. Step 2: Convert to fraction form
    22,354.71/33,665.81 = 20,361.84/x
  3. Step 3: Cross multiply
    22,354.71x = 33,665.81 × 20,361.84
  4. Step 4: Simplify right side
    22,354.71x = 685,497,734.88
  5. Step 5: Solve for x
    x = 685,497,734.88/22,354.71
  6. Step 6: Final answer
    x = 30,664.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.