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Finding the Fourth Proportional to 85,360.98, 128,057.94 and 32,766.36

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Solution

The fourth proportional to 85,360.98, 128,057.94 and 32,766.36 is: 49,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,360.98 : 128,057.94 = 32,766.36 : x
  2. Step 2: Convert to fraction form
    85,360.98/128,057.94 = 32,766.36/x
  3. Step 3: Cross multiply
    85,360.98x = 128,057.94 × 32,766.36
  4. Step 4: Simplify right side
    85,360.98x = 4,195,992,562.90
  5. Step 5: Solve for x
    x = 4,195,992,562.90/85,360.98
  6. Step 6: Final answer
    x = 49,155.86

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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.