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Finding the Fourth Proportional to 515,859.30, 773,898.30 and 156,000.60

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Solution

The fourth proportional to 515,859.30, 773,898.30 and 156,000.60 is: 234,033.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,859.30 : 773,898.30 = 156,000.60 : x
  2. Step 2: Convert to fraction form
    515,859.30/773,898.30 = 156,000.60/x
  3. Step 3: Cross multiply
    515,859.30x = 773,898.30 × 156,000.60
  4. Step 4: Simplify right side
    515,859.30x = 120,728,599,138.98
  5. Step 5: Solve for x
    x = 120,728,599,138.98/515,859.30
  6. Step 6: Final answer
    x = 234,033.97

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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.