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Finding the Third Proportional to 4,964 and 7,420

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Solution

The third proportional to 4,964 and 7,420 is: 11,091.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,964 : 7,420 = 7,420 : x
  2. Step 2: Convert to fraction form
    4,964/7,420 = 7,420/x
  3. Step 3: Cross multiply
    4,964x = 7,420 × 7,420
  4. Step 4: Simplify right side
    4,964x = 55,056,400
  5. Step 5: Solve for x
    x = 55,056,400/4,964
  6. Step 6: Final answer
    x = 11,091.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.