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Finding the Fourth Proportional to 106,636.47, 159,895.17 and 67,108.88

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Solution

The fourth proportional to 106,636.47, 159,895.17 and 67,108.88 is: 100,625.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,636.47 : 159,895.17 = 67,108.88 : x
  2. Step 2: Convert to fraction form
    106,636.47/159,895.17 = 67,108.88/x
  3. Step 3: Cross multiply
    106,636.47x = 159,895.17 × 67,108.88
  4. Step 4: Simplify right side
    106,636.47x = 10,730,384,976.63
  5. Step 5: Solve for x
    x = 10,730,384,976.63/106,636.47
  6. Step 6: Final answer
    x = 100,625.85

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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.