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Finding the Third Proportional to 4,860 and 6,210

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Solution

The third proportional to 4,860 and 6,210 is: 7,935

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860 : 6,210 = 6,210 : x
  2. Step 2: Convert to fraction form
    4,860/6,210 = 6,210/x
  3. Step 3: Cross multiply
    4,860x = 6,210 × 6,210
  4. Step 4: Simplify right side
    4,860x = 38,564,100
  5. Step 5: Solve for x
    x = 38,564,100/4,860
  6. Step 6: Final answer
    x = 7,935

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.