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Finding the Fourth Proportional to 81,174.82, 121,761.92 and 22,010.32

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Solution

The fourth proportional to 81,174.82, 121,761.92 and 22,010.32 is: 33,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,174.82 : 121,761.92 = 22,010.32 : x
  2. Step 2: Convert to fraction form
    81,174.82/121,761.92 = 22,010.32/x
  3. Step 3: Cross multiply
    81,174.82x = 121,761.92 × 22,010.32
  4. Step 4: Simplify right side
    81,174.82x = 2,680,018,712.96
  5. Step 5: Solve for x
    x = 2,680,018,712.96/81,174.82
  6. Step 6: Final answer
    x = 33,015.40

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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.