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Finding the Third Proportional to 6,490 and 7,462

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Solution

The third proportional to 6,490 and 7,462 is: 8,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490 : 7,462 = 7,462 : x
  2. Step 2: Convert to fraction form
    6,490/7,462 = 7,462/x
  3. Step 3: Cross multiply
    6,490x = 7,462 × 7,462
  4. Step 4: Simplify right side
    6,490x = 55,681,444
  5. Step 5: Solve for x
    x = 55,681,444/6,490
  6. Step 6: Final answer
    x = 8,579.58

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.