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Finding the Third Proportional to 4,905 and 5,325

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Solution

The third proportional to 4,905 and 5,325 is: 5,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905 : 5,325 = 5,325 : x
  2. Step 2: Convert to fraction form
    4,905/5,325 = 5,325/x
  3. Step 3: Cross multiply
    4,905x = 5,325 × 5,325
  4. Step 4: Simplify right side
    4,905x = 28,355,625
  5. Step 5: Solve for x
    x = 28,355,625/4,905
  6. Step 6: Final answer
    x = 5,780.96

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.