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Finding the Fourth Proportional to 99,769.88, 149,540.10 and 43,596.92

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Solution

The fourth proportional to 99,769.88, 149,540.10 and 43,596.92 is: 65,345.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,769.88 : 149,540.10 = 43,596.92 : x
  2. Step 2: Convert to fraction form
    99,769.88/149,540.10 = 43,596.92/x
  3. Step 3: Cross multiply
    99,769.88x = 149,540.10 × 43,596.92
  4. Step 4: Simplify right side
    99,769.88x = 6,519,487,776.49
  5. Step 5: Solve for x
    x = 6,519,487,776.49/99,769.88
  6. Step 6: Final answer
    x = 65,345.25

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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.