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Finding the Third Proportional to 621,724 and 1,115,516

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Solution

The third proportional to 621,724 and 1,115,516 is: 2,001,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,724 : 1,115,516 = 1,115,516 : x
  2. Step 2: Convert to fraction form
    621,724/1,115,516 = 1,115,516/x
  3. Step 3: Cross multiply
    621,724x = 1,115,516 × 1,115,516
  4. Step 4: Simplify right side
    621,724x = 1,244,375,946,256
  5. Step 5: Solve for x
    x = 1,244,375,946,256/621,724
  6. Step 6: Final answer
    x = 2,001,492.54

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.