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Finding the Fourth Proportional to 79,963.31, 110,305.72 and 55,725.95

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Solution

The fourth proportional to 79,963.31, 110,305.72 and 55,725.95 is: 76,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,963.31 : 110,305.72 = 55,725.95 : x
  2. Step 2: Convert to fraction form
    79,963.31/110,305.72 = 55,725.95/x
  3. Step 3: Cross multiply
    79,963.31x = 110,305.72 × 55,725.95
  4. Step 4: Simplify right side
    79,963.31x = 6,146,891,037.43
  5. Step 5: Solve for x
    x = 6,146,891,037.43/79,963.31
  6. Step 6: Final answer
    x = 76,871.39

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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.