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Finding the Third Proportional to 4,410 and 7,020

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Solution

The third proportional to 4,410 and 7,020 is: 11,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,410 : 7,020 = 7,020 : x
  2. Step 2: Convert to fraction form
    4,410/7,020 = 7,020/x
  3. Step 3: Cross multiply
    4,410x = 7,020 × 7,020
  4. Step 4: Simplify right side
    4,410x = 49,280,400
  5. Step 5: Solve for x
    x = 49,280,400/4,410
  6. Step 6: Final answer
    x = 11,174.69

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.