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Finding the Third Proportional to 568.50 and 853.88

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Solution

The third proportional to 568.50 and 853.88 is: 1,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.50 : 853.88 = 853.88 : x
  2. Step 2: Convert to fraction form
    568.50/853.88 = 853.88/x
  3. Step 3: Cross multiply
    568.50x = 853.88 × 853.88
  4. Step 4: Simplify right side
    568.50x = 729,102.52
  5. Step 5: Solve for x
    x = 729,102.52/568.50
  6. Step 6: Final answer
    x = 1,282.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.