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Finding the Third Proportional to 1,576.78 and 2,186.53

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Solution

The third proportional to 1,576.78 and 2,186.53 is: 3,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.78 : 2,186.53 = 2,186.53 : x
  2. Step 2: Convert to fraction form
    1,576.78/2,186.53 = 2,186.53/x
  3. Step 3: Cross multiply
    1,576.78x = 2,186.53 × 2,186.53
  4. Step 4: Simplify right side
    1,576.78x = 4,780,918.91
  5. Step 5: Solve for x
    x = 4,780,918.91/1,576.78
  6. Step 6: Final answer
    x = 3,032.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.