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Finding the Fourth Proportional to 67,352.84, 100,999.98 and 19,310.87

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Solution

The fourth proportional to 67,352.84, 100,999.98 and 19,310.87 is: 28,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,352.84 : 100,999.98 = 19,310.87 : x
  2. Step 2: Convert to fraction form
    67,352.84/100,999.98 = 19,310.87/x
  3. Step 3: Cross multiply
    67,352.84x = 100,999.98 × 19,310.87
  4. Step 4: Simplify right side
    67,352.84x = 1,950,397,137.88
  5. Step 5: Solve for x
    x = 1,950,397,137.88/67,352.84
  6. Step 6: Final answer
    x = 28,957.91

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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.