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Finding the Third Proportional to 4,985 and 5,525

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Solution

The third proportional to 4,985 and 5,525 is: 6,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985 : 5,525 = 5,525 : x
  2. Step 2: Convert to fraction form
    4,985/5,525 = 5,525/x
  3. Step 3: Cross multiply
    4,985x = 5,525 × 5,525
  4. Step 4: Simplify right side
    4,985x = 30,525,625
  5. Step 5: Solve for x
    x = 30,525,625/4,985
  6. Step 6: Final answer
    x = 6,123.50

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.