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Finding the Fourth Proportional to 682,156.92, 941,298.50 and 391,752.44

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Solution

The fourth proportional to 682,156.92, 941,298.50 and 391,752.44 is: 540,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,156.92 : 941,298.50 = 391,752.44 : x
  2. Step 2: Convert to fraction form
    682,156.92/941,298.50 = 391,752.44/x
  3. Step 3: Cross multiply
    682,156.92x = 941,298.50 × 391,752.44
  4. Step 4: Simplify right side
    682,156.92x = 368,755,984,143.34
  5. Step 5: Solve for x
    x = 368,755,984,143.34/682,156.92
  6. Step 6: Final answer
    x = 540,573.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.