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Finding the Third Proportional to 3,556 and 7,028

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Solution

The third proportional to 3,556 and 7,028 is: 13,889.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556 : 7,028 = 7,028 : x
  2. Step 2: Convert to fraction form
    3,556/7,028 = 7,028/x
  3. Step 3: Cross multiply
    3,556x = 7,028 × 7,028
  4. Step 4: Simplify right side
    3,556x = 49,392,784
  5. Step 5: Solve for x
    x = 49,392,784/3,556
  6. Step 6: Final answer
    x = 13,889.98

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.