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Finding the Third Proportional to 3,947,621 and 8,609,176

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Solution

The third proportional to 3,947,621 and 8,609,176 is: 18,775,336.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947,621 : 8,609,176 = 8,609,176 : x
  2. Step 2: Convert to fraction form
    3,947,621/8,609,176 = 8,609,176/x
  3. Step 3: Cross multiply
    3,947,621x = 8,609,176 × 8,609,176
  4. Step 4: Simplify right side
    3,947,621x = 74,117,911,398,976
  5. Step 5: Solve for x
    x = 74,117,911,398,976/3,947,621
  6. Step 6: Final answer
    x = 18,775,336.18

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.