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Finding the Third Proportional to 1,404 and 2,106

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Solution

The third proportional to 1,404 and 2,106 is: 3,159

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404 : 2,106 = 2,106 : x
  2. Step 2: Convert to fraction form
    1,404/2,106 = 2,106/x
  3. Step 3: Cross multiply
    1,404x = 2,106 × 2,106
  4. Step 4: Simplify right side
    1,404x = 4,435,236
  5. Step 5: Solve for x
    x = 4,435,236/1,404
  6. Step 6: Final answer
    x = 3,159

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.