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Finding the Fourth Proportional to 99,561.92, 137,395.36 and 54,849.92

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Solution

The fourth proportional to 99,561.92, 137,395.36 and 54,849.92 is: 75,692.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,561.92 : 137,395.36 = 54,849.92 : x
  2. Step 2: Convert to fraction form
    99,561.92/137,395.36 = 54,849.92/x
  3. Step 3: Cross multiply
    99,561.92x = 137,395.36 × 54,849.92
  4. Step 4: Simplify right side
    99,561.92x = 7,536,124,504.37
  5. Step 5: Solve for x
    x = 7,536,124,504.37/99,561.92
  6. Step 6: Final answer
    x = 75,692.84

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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.