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Finding the Fourth Proportional to 107,876.70, 161,789.13 and 55,259.10

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Solution

The fourth proportional to 107,876.70, 161,789.13 and 55,259.10 is: 82,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,876.70 : 161,789.13 = 55,259.10 : x
  2. Step 2: Convert to fraction form
    107,876.70/161,789.13 = 55,259.10/x
  3. Step 3: Cross multiply
    107,876.70x = 161,789.13 × 55,259.10
  4. Step 4: Simplify right side
    107,876.70x = 8,940,321,713.58
  5. Step 5: Solve for x
    x = 8,940,321,713.58/107,876.70
  6. Step 6: Final answer
    x = 82,875.37

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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.