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Finding the Fourth Proportional to 418,015.44, 626,890.68 and 137,467.60

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Solution

The fourth proportional to 418,015.44, 626,890.68 and 137,467.60 is: 206,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,015.44 : 626,890.68 = 137,467.60 : x
  2. Step 2: Convert to fraction form
    418,015.44/626,890.68 = 137,467.60/x
  3. Step 3: Cross multiply
    418,015.44x = 626,890.68 × 137,467.60
  4. Step 4: Simplify right side
    418,015.44x = 86,177,157,241.97
  5. Step 5: Solve for x
    x = 86,177,157,241.97/418,015.44
  6. Step 6: Final answer
    x = 206,157.83

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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.