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Finding the Third Proportional to 362.81 and 783

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Solution

The third proportional to 362.81 and 783 is: 1,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.81 : 783 = 783 : x
  2. Step 2: Convert to fraction form
    362.81/783 = 783/x
  3. Step 3: Cross multiply
    362.81x = 783 × 783
  4. Step 4: Simplify right side
    362.81x = 613,089
  5. Step 5: Solve for x
    x = 613,089/362.81
  6. Step 6: Final answer
    x = 1,689.82

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.