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Finding the Third Proportional to 42,778.13 and 64,189.13

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Solution

The third proportional to 42,778.13 and 64,189.13 is: 96,316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.13 : 64,189.13 = 64,189.13 : x
  2. Step 2: Convert to fraction form
    42,778.13/64,189.13 = 64,189.13/x
  3. Step 3: Cross multiply
    42,778.13x = 64,189.13 × 64,189.13
  4. Step 4: Simplify right side
    42,778.13x = 4,120,243,768.27
  5. Step 5: Solve for x
    x = 4,120,243,768.27/42,778.13
  6. Step 6: Final answer
    x = 96,316.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.