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Finding the Fourth Proportional to 91,842.14, 126,747.81 and 61,162.62

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Solution

The fourth proportional to 91,842.14, 126,747.81 and 61,162.62 is: 84,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,842.14 : 126,747.81 = 61,162.62 : x
  2. Step 2: Convert to fraction form
    91,842.14/126,747.81 = 61,162.62/x
  3. Step 3: Cross multiply
    91,842.14x = 126,747.81 × 61,162.62
  4. Step 4: Simplify right side
    91,842.14x = 7,752,228,138.86
  5. Step 5: Solve for x
    x = 7,752,228,138.86/91,842.14
  6. Step 6: Final answer
    x = 84,408.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.