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Finding the Fourth Proportional to 11,243.70, 16,869.60 and 4,674.60

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Solution

The fourth proportional to 11,243.70, 16,869.60 and 4,674.60 is: 7,013.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,243.70 : 16,869.60 = 4,674.60 : x
  2. Step 2: Convert to fraction form
    11,243.70/16,869.60 = 4,674.60/x
  3. Step 3: Cross multiply
    11,243.70x = 16,869.60 × 4,674.60
  4. Step 4: Simplify right side
    11,243.70x = 78,858,632.16
  5. Step 5: Solve for x
    x = 78,858,632.16/11,243.70
  6. Step 6: Final answer
    x = 7,013.58

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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.