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Finding the Third Proportional to 812,880 and 1,265,839

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Solution

The third proportional to 812,880 and 1,265,839 is: 1,971,199.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,880 : 1,265,839 = 1,265,839 : x
  2. Step 2: Convert to fraction form
    812,880/1,265,839 = 1,265,839/x
  3. Step 3: Cross multiply
    812,880x = 1,265,839 × 1,265,839
  4. Step 4: Simplify right side
    812,880x = 1,602,348,373,921
  5. Step 5: Solve for x
    x = 1,602,348,373,921/812,880
  6. Step 6: Final answer
    x = 1,971,199.16

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.