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Finding the Fourth Proportional to 104,479.44, 144,177.90 and 56,731.80

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Solution

The fourth proportional to 104,479.44, 144,177.90 and 56,731.80 is: 78,287.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,479.44 : 144,177.90 = 56,731.80 : x
  2. Step 2: Convert to fraction form
    104,479.44/144,177.90 = 56,731.80/x
  3. Step 3: Cross multiply
    104,479.44x = 144,177.90 × 56,731.80
  4. Step 4: Simplify right side
    104,479.44x = 8,179,471,787.22
  5. Step 5: Solve for x
    x = 8,179,471,787.22/104,479.44
  6. Step 6: Final answer
    x = 78,287.86

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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.