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Finding the Fourth Proportional to 625,190.49, 862,445.73 and 395,360.46

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Solution

The fourth proportional to 625,190.49, 862,445.73 and 395,360.46 is: 545,396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,190.49 : 862,445.73 = 395,360.46 : x
  2. Step 2: Convert to fraction form
    625,190.49/862,445.73 = 395,360.46/x
  3. Step 3: Cross multiply
    625,190.49x = 862,445.73 × 395,360.46
  4. Step 4: Simplify right side
    625,190.49x = 340,976,940,537.84
  5. Step 5: Solve for x
    x = 340,976,940,537.84/625,190.49
  6. Step 6: Final answer
    x = 545,396.88

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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.