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Finding the Third Proportional to 6,142 and 8,610

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Solution

The third proportional to 6,142 and 8,610 is: 12,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,142 : 8,610 = 8,610 : x
  2. Step 2: Convert to fraction form
    6,142/8,610 = 8,610/x
  3. Step 3: Cross multiply
    6,142x = 8,610 × 8,610
  4. Step 4: Simplify right side
    6,142x = 74,132,100
  5. Step 5: Solve for x
    x = 74,132,100/6,142
  6. Step 6: Final answer
    x = 12,069.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.