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Finding the Fourth Proportional to 361,909.62, 542,912.22 and 134,173.80

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Solution

The fourth proportional to 361,909.62, 542,912.22 and 134,173.80 is: 201,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,909.62 : 542,912.22 = 134,173.80 : x
  2. Step 2: Convert to fraction form
    361,909.62/542,912.22 = 134,173.80/x
  3. Step 3: Cross multiply
    361,909.62x = 542,912.22 × 134,173.80
  4. Step 4: Simplify right side
    361,909.62x = 72,844,595,623.84
  5. Step 5: Solve for x
    x = 72,844,595,623.84/361,909.62
  6. Step 6: Final answer
    x = 201,278.42

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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.