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Finding the Fourth Proportional to 682,018.48, 941,163.94 and 376,107.76

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Solution

The fourth proportional to 682,018.48, 941,163.94 and 376,107.76 is: 519,016.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,018.48 : 941,163.94 = 376,107.76 : x
  2. Step 2: Convert to fraction form
    682,018.48/941,163.94 = 376,107.76/x
  3. Step 3: Cross multiply
    682,018.48x = 941,163.94 × 376,107.76
  4. Step 4: Simplify right side
    682,018.48x = 353,979,061,266.17
  5. Step 5: Solve for x
    x = 353,979,061,266.17/682,018.48
  6. Step 6: Final answer
    x = 519,016.82

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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.