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Finding the Fourth Proportional to 99,832.89, 137,753.11 and 58,991.32

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Solution

The fourth proportional to 99,832.89, 137,753.11 and 58,991.32 is: 81,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,832.89 : 137,753.11 = 58,991.32 : x
  2. Step 2: Convert to fraction form
    99,832.89/137,753.11 = 58,991.32/x
  3. Step 3: Cross multiply
    99,832.89x = 137,753.11 × 58,991.32
  4. Step 4: Simplify right side
    99,832.89x = 8,126,237,793.01
  5. Step 5: Solve for x
    x = 8,126,237,793.01/99,832.89
  6. Step 6: Final answer
    x = 81,398.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.