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Finding the Fourth Proportional to 78,879.20, 108,856.04 and 44,892.81

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Solution

The fourth proportional to 78,879.20, 108,856.04 and 44,892.81 is: 61,953.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,879.20 : 108,856.04 = 44,892.81 : x
  2. Step 2: Convert to fraction form
    78,879.20/108,856.04 = 44,892.81/x
  3. Step 3: Cross multiply
    78,879.20x = 108,856.04 × 44,892.81
  4. Step 4: Simplify right side
    78,879.20x = 4,886,853,296.61
  5. Step 5: Solve for x
    x = 4,886,853,296.61/78,879.20
  6. Step 6: Final answer
    x = 61,953.64

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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.