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Finding the Fourth Proportional to 139,892.14, 209,900.22 and 73,316.44

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Solution

The fourth proportional to 139,892.14, 209,900.22 and 73,316.44 is: 110,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,892.14 : 209,900.22 = 73,316.44 : x
  2. Step 2: Convert to fraction form
    139,892.14/209,900.22 = 73,316.44/x
  3. Step 3: Cross multiply
    139,892.14x = 209,900.22 × 73,316.44
  4. Step 4: Simplify right side
    139,892.14x = 15,389,136,885.62
  5. Step 5: Solve for x
    x = 15,389,136,885.62/139,892.14
  6. Step 6: Final answer
    x = 110,007.16

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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.