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Finding the Fourth Proportional to 81,863.87, 122,810.67 and 33,832.58

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Solution

The fourth proportional to 81,863.87, 122,810.67 and 33,832.58 is: 50,755.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,863.87 : 122,810.67 = 33,832.58 : x
  2. Step 2: Convert to fraction form
    81,863.87/122,810.67 = 33,832.58/x
  3. Step 3: Cross multiply
    81,863.87x = 122,810.67 × 33,832.58
  4. Step 4: Simplify right side
    81,863.87x = 4,155,001,203.58
  5. Step 5: Solve for x
    x = 4,155,001,203.58/81,863.87
  6. Step 6: Final answer
    x = 50,755.01

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1.5x scale

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.