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Finding the Fourth Proportional to 73,136.70, 109,736.91 and 28,795.68

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Solution

The fourth proportional to 73,136.70, 109,736.91 and 28,795.68 is: 43,206.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,136.70 : 109,736.91 = 28,795.68 : x
  2. Step 2: Convert to fraction form
    73,136.70/109,736.91 = 28,795.68/x
  3. Step 3: Cross multiply
    73,136.70x = 109,736.91 × 28,795.68
  4. Step 4: Simplify right side
    73,136.70x = 3,159,948,944.55
  5. Step 5: Solve for x
    x = 3,159,948,944.55/73,136.70
  6. Step 6: Final answer
    x = 43,206.06

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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.