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Finding the Fourth Proportional to 99,424.94, 149,133.24 and 67,755.87

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Solution

The fourth proportional to 99,424.94, 149,133.24 and 67,755.87 is: 101,630.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,424.94 : 149,133.24 = 67,755.87 : x
  2. Step 2: Convert to fraction form
    99,424.94/149,133.24 = 67,755.87/x
  3. Step 3: Cross multiply
    99,424.94x = 149,133.24 × 67,755.87
  4. Step 4: Simplify right side
    99,424.94x = 10,104,652,422.12
  5. Step 5: Solve for x
    x = 10,104,652,422.12/99,424.94
  6. Step 6: Final answer
    x = 101,630.97

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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.