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Finding the Third Proportional to 1,690 and 2,476

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Solution

The third proportional to 1,690 and 2,476 is: 3,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690 : 2,476 = 2,476 : x
  2. Step 2: Convert to fraction form
    1,690/2,476 = 2,476/x
  3. Step 3: Cross multiply
    1,690x = 2,476 × 2,476
  4. Step 4: Simplify right side
    1,690x = 6,130,576
  5. Step 5: Solve for x
    x = 6,130,576/1,690
  6. Step 6: Final answer
    x = 3,627.56

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.