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Finding the Fourth Proportional to 73,108.56, 109,706.58 and 67,159.92

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Solution

The fourth proportional to 73,108.56, 109,706.58 and 67,159.92 is: 100,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,108.56 : 109,706.58 = 67,159.92 : x
  2. Step 2: Convert to fraction form
    73,108.56/109,706.58 = 67,159.92/x
  3. Step 3: Cross multiply
    73,108.56x = 109,706.58 × 67,159.92
  4. Step 4: Simplify right side
    73,108.56x = 7,367,885,136.27
  5. Step 5: Solve for x
    x = 7,367,885,136.27/73,108.56
  6. Step 6: Final answer
    x = 100,780.06

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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.