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Finding the Third Proportional to 3,947,595.75 and 8,608,639.50

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Solution

The third proportional to 3,947,595.75 and 8,608,639.50 is: 18,773,116.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947,595.75 : 8,608,639.50 = 8,608,639.50 : x
  2. Step 2: Convert to fraction form
    3,947,595.75/8,608,639.50 = 8,608,639.50/x
  3. Step 3: Cross multiply
    3,947,595.75x = 8,608,639.50 × 8,608,639.50
  4. Step 4: Simplify right side
    3,947,595.75x = 74,108,674,040,960.25
  5. Step 5: Solve for x
    x = 74,108,674,040,960.25/3,947,595.75
  6. Step 6: Final answer
    x = 18,773,116.28

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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.