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Finding the Fourth Proportional to 84,879.68, 127,335.17 and 27,956.93

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Solution

The fourth proportional to 84,879.68, 127,335.17 and 27,956.93 is: 41,940.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,879.68 : 127,335.17 = 27,956.93 : x
  2. Step 2: Convert to fraction form
    84,879.68/127,335.17 = 27,956.93/x
  3. Step 3: Cross multiply
    84,879.68x = 127,335.17 × 27,956.93
  4. Step 4: Simplify right side
    84,879.68x = 3,559,899,657.77
  5. Step 5: Solve for x
    x = 3,559,899,657.77/84,879.68
  6. Step 6: Final answer
    x = 41,940.54

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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.