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Finding the Third Proportional to 6,871.50 and 7,605.38

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Solution

The third proportional to 6,871.50 and 7,605.38 is: 8,417.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.50 : 7,605.38 = 7,605.38 : x
  2. Step 2: Convert to fraction form
    6,871.50/7,605.38 = 7,605.38/x
  3. Step 3: Cross multiply
    6,871.50x = 7,605.38 × 7,605.38
  4. Step 4: Simplify right side
    6,871.50x = 57,841,728.89
  5. Step 5: Solve for x
    x = 57,841,728.89/6,871.50
  6. Step 6: Final answer
    x = 8,417.63

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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.