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Finding the Fourth Proportional to 667,682.94, 921,372.39 and 365,870.46

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Solution

The fourth proportional to 667,682.94, 921,372.39 and 365,870.46 is: 504,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,682.94 : 921,372.39 = 365,870.46 : x
  2. Step 2: Convert to fraction form
    667,682.94/921,372.39 = 365,870.46/x
  3. Step 3: Cross multiply
    667,682.94x = 921,372.39 × 365,870.46
  4. Step 4: Simplify right side
    667,682.94x = 337,102,940,160.60
  5. Step 5: Solve for x
    x = 337,102,940,160.60/667,682.94
  6. Step 6: Final answer
    x = 504,884.76

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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.