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Finding the Fourth Proportional to 84,667.61, 126,991.70 and 22,342.97

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Solution

The fourth proportional to 84,667.61, 126,991.70 and 22,342.97 is: 33,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,667.61 : 126,991.70 = 22,342.97 : x
  2. Step 2: Convert to fraction form
    84,667.61/126,991.70 = 22,342.97/x
  3. Step 3: Cross multiply
    84,667.61x = 126,991.70 × 22,342.97
  4. Step 4: Simplify right side
    84,667.61x = 2,837,371,631.63
  5. Step 5: Solve for x
    x = 2,837,371,631.63/84,667.61
  6. Step 6: Final answer
    x = 33,511.89

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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.