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Finding the Fourth Proportional to 573,914.40, 861,025.20 and 512,013.60

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Solution

The fourth proportional to 573,914.40, 861,025.20 and 512,013.60 is: 768,157.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,914.40 : 861,025.20 = 512,013.60 : x
  2. Step 2: Convert to fraction form
    573,914.40/861,025.20 = 512,013.60/x
  3. Step 3: Cross multiply
    573,914.40x = 861,025.20 × 512,013.60
  4. Step 4: Simplify right side
    573,914.40x = 440,856,612,342.72
  5. Step 5: Solve for x
    x = 440,856,612,342.72/573,914.40
  6. Step 6: Final answer
    x = 768,157.43

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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.