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Finding the Fourth Proportional to 81,515.94, 122,093.25 and 62,657.10

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Solution

The fourth proportional to 81,515.94, 122,093.25 and 62,657.10 is: 93,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.94 : 122,093.25 = 62,657.10 : x
  2. Step 2: Convert to fraction form
    81,515.94/122,093.25 = 62,657.10/x
  3. Step 3: Cross multiply
    81,515.94x = 122,093.25 × 62,657.10
  4. Step 4: Simplify right side
    81,515.94x = 7,650,008,974.58
  5. Step 5: Solve for x
    x = 7,650,008,974.58/81,515.94
  6. Step 6: Final answer
    x = 93,846.79

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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.