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Finding the Fourth Proportional to 99,996.60, 149,822.10 and 84,444.60

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Solution

The fourth proportional to 99,996.60, 149,822.10 and 84,444.60 is: 126,520.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,996.60 : 149,822.10 = 84,444.60 : x
  2. Step 2: Convert to fraction form
    99,996.60/149,822.10 = 84,444.60/x
  3. Step 3: Cross multiply
    99,996.60x = 149,822.10 × 84,444.60
  4. Step 4: Simplify right side
    99,996.60x = 12,651,667,305.66
  5. Step 5: Solve for x
    x = 12,651,667,305.66/99,996.60
  6. Step 6: Final answer
    x = 126,520.97

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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.