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Finding the Fourth Proportional to 140,871.52, 211,331.88 and 61,983.70

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Solution

The fourth proportional to 140,871.52, 211,331.88 and 61,983.70 is: 92,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,871.52 : 211,331.88 = 61,983.70 : x
  2. Step 2: Convert to fraction form
    140,871.52/211,331.88 = 61,983.70/x
  3. Step 3: Cross multiply
    140,871.52x = 211,331.88 × 61,983.70
  4. Step 4: Simplify right side
    140,871.52x = 13,099,131,850.36
  5. Step 5: Solve for x
    x = 13,099,131,850.36/140,871.52
  6. Step 6: Final answer
    x = 92,986.37

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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.