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Finding the Third Proportional to 5,329 and 8,211.50

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Solution

The third proportional to 5,329 and 8,211.50 is: 12,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329 : 8,211.50 = 8,211.50 : x
  2. Step 2: Convert to fraction form
    5,329/8,211.50 = 8,211.50/x
  3. Step 3: Cross multiply
    5,329x = 8,211.50 × 8,211.50
  4. Step 4: Simplify right side
    5,329x = 67,428,732.25
  5. Step 5: Solve for x
    x = 67,428,732.25/5,329
  6. Step 6: Final answer
    x = 12,653.17

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.