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Finding the Third Proportional to 2,668.78 and 4,114.55

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Solution

The third proportional to 2,668.78 and 4,114.55 is: 6,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.78 : 4,114.55 = 4,114.55 : x
  2. Step 2: Convert to fraction form
    2,668.78/4,114.55 = 4,114.55/x
  3. Step 3: Cross multiply
    2,668.78x = 4,114.55 × 4,114.55
  4. Step 4: Simplify right side
    2,668.78x = 16,929,495.99
  5. Step 5: Solve for x
    x = 16,929,495.99/2,668.78
  6. Step 6: Final answer
    x = 6,343.53

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.