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Finding the Third Proportional to 3,990,620.25 and 8,726,602.50

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Solution

The third proportional to 3,990,620.25 and 8,726,602.50 is: 19,083,146.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,620.25 : 8,726,602.50 = 8,726,602.50 : x
  2. Step 2: Convert to fraction form
    3,990,620.25/8,726,602.50 = 8,726,602.50/x
  3. Step 3: Cross multiply
    3,990,620.25x = 8,726,602.50 × 8,726,602.50
  4. Step 4: Simplify right side
    3,990,620.25x = 76,153,591,193,006.25
  5. Step 5: Solve for x
    x = 76,153,591,193,006.25/3,990,620.25
  6. Step 6: Final answer
    x = 19,083,146.58

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.