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Finding the Fourth Proportional to 619,713, 855,203.94 and 351,441

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Solution

The fourth proportional to 619,713, 855,203.94 and 351,441 is: 484,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,713 : 855,203.94 = 351,441 : x
  2. Step 2: Convert to fraction form
    619,713/855,203.94 = 351,441/x
  3. Step 3: Cross multiply
    619,713x = 855,203.94 × 351,441
  4. Step 4: Simplify right side
    619,713x = 300,553,727,877.54
  5. Step 5: Solve for x
    x = 300,553,727,877.54/619,713
  6. Step 6: Final answer
    x = 484,988.58

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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.