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Finding the Third Proportional to 708.94 and 1,531.69

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Solution

The third proportional to 708.94 and 1,531.69 is: 3,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.94 : 1,531.69 = 1,531.69 : x
  2. Step 2: Convert to fraction form
    708.94/1,531.69 = 1,531.69/x
  3. Step 3: Cross multiply
    708.94x = 1,531.69 × 1,531.69
  4. Step 4: Simplify right side
    708.94x = 2,346,066.60
  5. Step 5: Solve for x
    x = 2,346,066.60/708.94
  6. Step 6: Final answer
    x = 3,309.27

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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.