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Finding the Fourth Proportional to 636,805.93, 878,294.68 and 394,952.89

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Solution

The fourth proportional to 636,805.93, 878,294.68 and 394,952.89 is: 544,726.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,805.93 : 878,294.68 = 394,952.89 : x
  2. Step 2: Convert to fraction form
    636,805.93/878,294.68 = 394,952.89/x
  3. Step 3: Cross multiply
    636,805.93x = 878,294.68 × 394,952.89
  4. Step 4: Simplify right side
    636,805.93x = 346,885,022,137.63
  5. Step 5: Solve for x
    x = 346,885,022,137.63/636,805.93
  6. Step 6: Final answer
    x = 544,726.43

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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.