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Finding the Third Proportional to 1,278,587 and 1,985,115

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Solution

The third proportional to 1,278,587 and 1,985,115 is: 3,082,059.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,587 : 1,985,115 = 1,985,115 : x
  2. Step 2: Convert to fraction form
    1,278,587/1,985,115 = 1,985,115/x
  3. Step 3: Cross multiply
    1,278,587x = 1,985,115 × 1,985,115
  4. Step 4: Simplify right side
    1,278,587x = 3,940,681,563,225
  5. Step 5: Solve for x
    x = 3,940,681,563,225/1,278,587
  6. Step 6: Final answer
    x = 3,082,059.78

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.