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Finding the Third Proportional to 11,776 and 16,140

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Solution

The third proportional to 11,776 and 16,140 is: 22,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776 : 16,140 = 16,140 : x
  2. Step 2: Convert to fraction form
    11,776/16,140 = 16,140/x
  3. Step 3: Cross multiply
    11,776x = 16,140 × 16,140
  4. Step 4: Simplify right side
    11,776x = 260,499,600
  5. Step 5: Solve for x
    x = 260,499,600/11,776
  6. Step 6: Final answer
    x = 22,121.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.