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Finding the Fourth Proportional to 77,778.88, 116,559.80 and 58,787.90

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Solution

The fourth proportional to 77,778.88, 116,559.80 and 58,787.90 is: 88,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.88 : 116,559.80 = 58,787.90 : x
  2. Step 2: Convert to fraction form
    77,778.88/116,559.80 = 58,787.90/x
  3. Step 3: Cross multiply
    77,778.88x = 116,559.80 × 58,787.90
  4. Step 4: Simplify right side
    77,778.88x = 6,852,305,866.42
  5. Step 5: Solve for x
    x = 6,852,305,866.42/77,778.88
  6. Step 6: Final answer
    x = 88,099.83

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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.