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Finding the Fourth Proportional to 87,399.88, 120,611.86 and 49,673.16

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Solution

The fourth proportional to 87,399.88, 120,611.86 and 49,673.16 is: 68,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399.88 : 120,611.86 = 49,673.16 : x
  2. Step 2: Convert to fraction form
    87,399.88/120,611.86 = 49,673.16/x
  3. Step 3: Cross multiply
    87,399.88x = 120,611.86 × 49,673.16
  4. Step 4: Simplify right side
    87,399.88x = 5,991,172,219.68
  5. Step 5: Solve for x
    x = 5,991,172,219.68/87,399.88
  6. Step 6: Final answer
    x = 68,548.98

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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.