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Finding the Fourth Proportional to 104,116.92, 156,017.70 and 68,930.52

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Solution

The fourth proportional to 104,116.92, 156,017.70 and 68,930.52 is: 103,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,116.92 : 156,017.70 = 68,930.52 : x
  2. Step 2: Convert to fraction form
    104,116.92/156,017.70 = 68,930.52/x
  3. Step 3: Cross multiply
    104,116.92x = 156,017.70 × 68,930.52
  4. Step 4: Simplify right side
    104,116.92x = 10,754,381,190.20
  5. Step 5: Solve for x
    x = 10,754,381,190.20/104,116.92
  6. Step 6: Final answer
    x = 103,291.39

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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.