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Finding the Third Proportional to 4,487,991 and 9,736,878

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Solution

The third proportional to 4,487,991 and 9,736,878 is: 21,124,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,487,991 : 9,736,878 = 9,736,878 : x
  2. Step 2: Convert to fraction form
    4,487,991/9,736,878 = 9,736,878/x
  3. Step 3: Cross multiply
    4,487,991x = 9,736,878 × 9,736,878
  4. Step 4: Simplify right side
    4,487,991x = 94,806,793,186,884
  5. Step 5: Solve for x
    x = 94,806,793,186,884/4,487,991
  6. Step 6: Final answer
    x = 21,124,550.65

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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.