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Finding the Third Proportional to 18,916.03 and 24,121.55

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Solution

The third proportional to 18,916.03 and 24,121.55 is: 30,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.03 : 24,121.55 = 24,121.55 : x
  2. Step 2: Convert to fraction form
    18,916.03/24,121.55 = 24,121.55/x
  3. Step 3: Cross multiply
    18,916.03x = 24,121.55 × 24,121.55
  4. Step 4: Simplify right side
    18,916.03x = 581,849,023.64
  5. Step 5: Solve for x
    x = 581,849,023.64/18,916.03
  6. Step 6: Final answer
    x = 30,759.57

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.