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Finding the Fourth Proportional to 40,846.60, 61,269.90 and 20,110.60

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Solution

The fourth proportional to 40,846.60, 61,269.90 and 20,110.60 is: 30,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,846.60 : 61,269.90 = 20,110.60 : x
  2. Step 2: Convert to fraction form
    40,846.60/61,269.90 = 20,110.60/x
  3. Step 3: Cross multiply
    40,846.60x = 61,269.90 × 20,110.60
  4. Step 4: Simplify right side
    40,846.60x = 1,232,174,450.94
  5. Step 5: Solve for x
    x = 1,232,174,450.94/40,846.60
  6. Step 6: Final answer
    x = 30,165.90

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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.