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Finding the Third Proportional to 462 and 715.31

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Solution

The third proportional to 462 and 715.31 is: 1,107.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    462 : 715.31 = 715.31 : x
  2. Step 2: Convert to fraction form
    462/715.31 = 715.31/x
  3. Step 3: Cross multiply
    462x = 715.31 × 715.31
  4. Step 4: Simplify right side
    462x = 511,671.97
  5. Step 5: Solve for x
    x = 511,671.97/462
  6. Step 6: Final answer
    x = 1,107.52

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.