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Finding the Fourth Proportional to 18,481, 25,503.78 and 11,029

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Solution

The fourth proportional to 18,481, 25,503.78 and 11,029 is: 15,220.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481 : 25,503.78 = 11,029 : x
  2. Step 2: Convert to fraction form
    18,481/25,503.78 = 11,029/x
  3. Step 3: Cross multiply
    18,481x = 25,503.78 × 11,029
  4. Step 4: Simplify right side
    18,481x = 281,281,189.62
  5. Step 5: Solve for x
    x = 281,281,189.62/18,481
  6. Step 6: Final answer
    x = 15,220.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.