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Finding the Third Proportional to 652 and 1,369.50

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Solution

The third proportional to 652 and 1,369.50 is: 2,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    652 : 1,369.50 = 1,369.50 : x
  2. Step 2: Convert to fraction form
    652/1,369.50 = 1,369.50/x
  3. Step 3: Cross multiply
    652x = 1,369.50 × 1,369.50
  4. Step 4: Simplify right side
    652x = 1,875,530.25
  5. Step 5: Solve for x
    x = 1,875,530.25/652
  6. Step 6: Final answer
    x = 2,876.58

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.