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Finding the Third Proportional to 913.78 and 1,714.92

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Solution

The third proportional to 913.78 and 1,714.92 is: 3,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.78 : 1,714.92 = 1,714.92 : x
  2. Step 2: Convert to fraction form
    913.78/1,714.92 = 1,714.92/x
  3. Step 3: Cross multiply
    913.78x = 1,714.92 × 1,714.92
  4. Step 4: Simplify right side
    913.78x = 2,940,957.04
  5. Step 5: Solve for x
    x = 2,940,957.04/913.78
  6. Step 6: Final answer
    x = 3,218.45

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.