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Finding the Fourth Proportional to 81,398.96, 122,058.28 and 33,999.92

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Solution

The fourth proportional to 81,398.96, 122,058.28 and 33,999.92 is: 50,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.96 : 122,058.28 = 33,999.92 : x
  2. Step 2: Convert to fraction form
    81,398.96/122,058.28 = 33,999.92/x
  3. Step 3: Cross multiply
    81,398.96x = 122,058.28 × 33,999.92
  4. Step 4: Simplify right side
    81,398.96x = 4,149,971,755.34
  5. Step 5: Solve for x
    x = 4,149,971,755.34/81,398.96
  6. Step 6: Final answer
    x = 50,983.11

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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.