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Finding the Fourth Proportional to 81,391.32, 122,086.16 and 22,226.99

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Solution

The fourth proportional to 81,391.32, 122,086.16 and 22,226.99 is: 33,340.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,391.32 : 122,086.16 = 22,226.99 : x
  2. Step 2: Convert to fraction form
    81,391.32/122,086.16 = 22,226.99/x
  3. Step 3: Cross multiply
    81,391.32x = 122,086.16 × 22,226.99
  4. Step 4: Simplify right side
    81,391.32x = 2,713,607,135.89
  5. Step 5: Solve for x
    x = 2,713,607,135.89/81,391.32
  6. Step 6: Final answer
    x = 33,340.25

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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.