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Finding the Third Proportional to 648.95 and 932.13

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Solution

The third proportional to 648.95 and 932.13 is: 1,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.95 : 932.13 = 932.13 : x
  2. Step 2: Convert to fraction form
    648.95/932.13 = 932.13/x
  3. Step 3: Cross multiply
    648.95x = 932.13 × 932.13
  4. Step 4: Simplify right side
    648.95x = 868,871.58
  5. Step 5: Solve for x
    x = 868,871.58/648.95
  6. Step 6: Final answer
    x = 1,338.89

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.