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Finding the Fourth Proportional to 409,624.40, 614,436.60 and 267,906.80

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Solution

The fourth proportional to 409,624.40, 614,436.60 and 267,906.80 is: 401,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,624.40 : 614,436.60 = 267,906.80 : x
  2. Step 2: Convert to fraction form
    409,624.40/614,436.60 = 267,906.80/x
  3. Step 3: Cross multiply
    409,624.40x = 614,436.60 × 267,906.80
  4. Step 4: Simplify right side
    409,624.40x = 164,611,743,308.88
  5. Step 5: Solve for x
    x = 164,611,743,308.88/409,624.40
  6. Step 6: Final answer
    x = 401,860.20

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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.