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Finding the Third Proportional to 886,690 and 1,921,555

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Solution

The third proportional to 886,690 and 1,921,555 is: 4,164,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,690 : 1,921,555 = 1,921,555 : x
  2. Step 2: Convert to fraction form
    886,690/1,921,555 = 1,921,555/x
  3. Step 3: Cross multiply
    886,690x = 1,921,555 × 1,921,555
  4. Step 4: Simplify right side
    886,690x = 3,692,373,618,025
  5. Step 5: Solve for x
    x = 3,692,373,618,025/886,690
  6. Step 6: Final answer
    x = 4,164,221.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.