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Finding the Third Proportional to 695.81 and 910.13

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Solution

The third proportional to 695.81 and 910.13 is: 1,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.81 : 910.13 = 910.13 : x
  2. Step 2: Convert to fraction form
    695.81/910.13 = 910.13/x
  3. Step 3: Cross multiply
    695.81x = 910.13 × 910.13
  4. Step 4: Simplify right side
    695.81x = 828,327.52
  5. Step 5: Solve for x
    x = 828,327.52/695.81
  6. Step 6: Final answer
    x = 1,190.45

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.