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Finding the Third Proportional to 7,858 and 8,482

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Solution

The third proportional to 7,858 and 8,482 is: 9,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858 : 8,482 = 8,482 : x
  2. Step 2: Convert to fraction form
    7,858/8,482 = 8,482/x
  3. Step 3: Cross multiply
    7,858x = 8,482 × 8,482
  4. Step 4: Simplify right side
    7,858x = 71,944,324
  5. Step 5: Solve for x
    x = 71,944,324/7,858
  6. Step 6: Final answer
    x = 9,155.55

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.