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Finding the Third Proportional to 668,411 and 1,391,901

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Solution

The third proportional to 668,411 and 1,391,901 is: 2,898,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,411 : 1,391,901 = 1,391,901 : x
  2. Step 2: Convert to fraction form
    668,411/1,391,901 = 1,391,901/x
  3. Step 3: Cross multiply
    668,411x = 1,391,901 × 1,391,901
  4. Step 4: Simplify right side
    668,411x = 1,937,388,393,801
  5. Step 5: Solve for x
    x = 1,937,388,393,801/668,411
  6. Step 6: Final answer
    x = 2,898,498.67

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.