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Finding the Third Proportional to 1,674 and 3,520

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Solution

The third proportional to 1,674 and 3,520 is: 7,401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674 : 3,520 = 3,520 : x
  2. Step 2: Convert to fraction form
    1,674/3,520 = 3,520/x
  3. Step 3: Cross multiply
    1,674x = 3,520 × 3,520
  4. Step 4: Simplify right side
    1,674x = 12,390,400
  5. Step 5: Solve for x
    x = 12,390,400/1,674
  6. Step 6: Final answer
    x = 7,401.67

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.