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Finding the Fourth Proportional to 667,892.43, 921,689.19 and 361,976.24

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Solution

The fourth proportional to 667,892.43, 921,689.19 and 361,976.24 is: 499,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,892.43 : 921,689.19 = 361,976.24 : x
  2. Step 2: Convert to fraction form
    667,892.43/921,689.19 = 361,976.24/x
  3. Step 3: Cross multiply
    667,892.43x = 921,689.19 × 361,976.24
  4. Step 4: Simplify right side
    667,892.43x = 333,629,585,570.84
  5. Step 5: Solve for x
    x = 333,629,585,570.84/667,892.43
  6. Step 6: Final answer
    x = 499,525.93

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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.