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Finding the Third Proportional to 5,421.38 and 11,835.38

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Solution

The third proportional to 5,421.38 and 11,835.38 is: 25,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.38 : 11,835.38 = 11,835.38 : x
  2. Step 2: Convert to fraction form
    5,421.38/11,835.38 = 11,835.38/x
  3. Step 3: Cross multiply
    5,421.38x = 11,835.38 × 11,835.38
  4. Step 4: Simplify right side
    5,421.38x = 140,076,101.39
  5. Step 5: Solve for x
    x = 140,076,101.39/5,421.38
  6. Step 6: Final answer
    x = 25,837.74

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.