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Finding the Third Proportional to 930 and 2,421

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Solution

The third proportional to 930 and 2,421 is: 6,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    930 : 2,421 = 2,421 : x
  2. Step 2: Convert to fraction form
    930/2,421 = 2,421/x
  3. Step 3: Cross multiply
    930x = 2,421 × 2,421
  4. Step 4: Simplify right side
    930x = 5,861,241
  5. Step 5: Solve for x
    x = 5,861,241/930
  6. Step 6: Final answer
    x = 6,302.41

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.