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Finding the Fourth Proportional to 699,553, 965,383.14 and 397,747

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Solution

The fourth proportional to 699,553, 965,383.14 and 397,747 is: 548,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,553 : 965,383.14 = 397,747 : x
  2. Step 2: Convert to fraction form
    699,553/965,383.14 = 397,747/x
  3. Step 3: Cross multiply
    699,553x = 965,383.14 × 397,747
  4. Step 4: Simplify right side
    699,553x = 383,978,247,785.58
  5. Step 5: Solve for x
    x = 383,978,247,785.58/699,553
  6. Step 6: Final answer
    x = 548,890.86

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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.