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Finding the Fourth Proportional to 636,086.97, 877,805.51 and 349,613.73

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Solution

The fourth proportional to 636,086.97, 877,805.51 and 349,613.73 is: 482,469.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,086.97 : 877,805.51 = 349,613.73 : x
  2. Step 2: Convert to fraction form
    636,086.97/877,805.51 = 349,613.73/x
  3. Step 3: Cross multiply
    636,086.97x = 877,805.51 × 349,613.73
  4. Step 4: Simplify right side
    636,086.97x = 306,892,856,817.58
  5. Step 5: Solve for x
    x = 306,892,856,817.58/636,086.97
  6. Step 6: Final answer
    x = 482,469.96

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1.5x scale

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.