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Finding the Fourth Proportional to 418,737.48, 628,164.14 and 134,361.18

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Solution

The fourth proportional to 418,737.48, 628,164.14 and 134,361.18 is: 201,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,737.48 : 628,164.14 = 134,361.18 : x
  2. Step 2: Convert to fraction form
    418,737.48/628,164.14 = 134,361.18/x
  3. Step 3: Cross multiply
    418,737.48x = 628,164.14 × 134,361.18
  4. Step 4: Simplify right side
    418,737.48x = 84,400,874,412.28
  5. Step 5: Solve for x
    x = 84,400,874,412.28/418,737.48
  6. Step 6: Final answer
    x = 201,560.36

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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.