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Finding the Third Proportional to 13,763.81 and 15,814.13

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Solution

The third proportional to 13,763.81 and 15,814.13 is: 18,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.81 : 15,814.13 = 15,814.13 : x
  2. Step 2: Convert to fraction form
    13,763.81/15,814.13 = 15,814.13/x
  3. Step 3: Cross multiply
    13,763.81x = 15,814.13 × 15,814.13
  4. Step 4: Simplify right side
    13,763.81x = 250,086,549.52
  5. Step 5: Solve for x
    x = 250,086,549.52/13,763.81
  6. Step 6: Final answer
    x = 18,169.86

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.