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Finding the Fourth Proportional to 619,140.75, 928,648.92 and 169,906.80

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Solution

The fourth proportional to 619,140.75, 928,648.92 and 169,906.80 is: 254,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,140.75 : 928,648.92 = 169,906.80 : x
  2. Step 2: Convert to fraction form
    619,140.75/928,648.92 = 169,906.80/x
  3. Step 3: Cross multiply
    619,140.75x = 928,648.92 × 169,906.80
  4. Step 4: Simplify right side
    619,140.75x = 157,783,766,320.66
  5. Step 5: Solve for x
    x = 157,783,766,320.66/619,140.75
  6. Step 6: Final answer
    x = 254,843.13

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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.