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Finding the Third Proportional to 696.61 and 1,425.25

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Solution

The third proportional to 696.61 and 1,425.25 is: 2,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.61 : 1,425.25 = 1,425.25 : x
  2. Step 2: Convert to fraction form
    696.61/1,425.25 = 1,425.25/x
  3. Step 3: Cross multiply
    696.61x = 1,425.25 × 1,425.25
  4. Step 4: Simplify right side
    696.61x = 2,031,343.13
  5. Step 5: Solve for x
    x = 2,031,343.13/696.61
  6. Step 6: Final answer
    x = 2,916.05

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.