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Finding the Fourth Proportional to 78,288.74, 108,037.84 and 44,296.94

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Solution

The fourth proportional to 78,288.74, 108,037.84 and 44,296.94 is: 61,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,288.74 : 108,037.84 = 44,296.94 : x
  2. Step 2: Convert to fraction form
    78,288.74/108,037.84 = 44,296.94/x
  3. Step 3: Cross multiply
    78,288.74x = 108,037.84 × 44,296.94
  4. Step 4: Simplify right side
    78,288.74x = 4,785,745,716.21
  5. Step 5: Solve for x
    x = 4,785,745,716.21/78,288.74
  6. Step 6: Final answer
    x = 61,129.43

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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.