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Finding the Third Proportional to 5,280.75 and 8,361

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Solution

The third proportional to 5,280.75 and 8,361 is: 13,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.75 : 8,361 = 8,361 : x
  2. Step 2: Convert to fraction form
    5,280.75/8,361 = 8,361/x
  3. Step 3: Cross multiply
    5,280.75x = 8,361 × 8,361
  4. Step 4: Simplify right side
    5,280.75x = 69,906,321
  5. Step 5: Solve for x
    x = 69,906,321/5,280.75
  6. Step 6: Final answer
    x = 13,237.95

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.