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Finding the Third Proportional to 822,121,939 and 1,940,060,655.50

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Solution

The third proportional to 822,121,939 and 1,940,060,655.50 is: 4,578,195,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,121,939 : 1,940,060,655.50 = 1,940,060,655.50 : x
  2. Step 2: Convert to fraction form
    822,121,939/1,940,060,655.50 = 1,940,060,655.50/x
  3. Step 3: Cross multiply
    822,121,939x = 1,940,060,655.50 × 1,940,060,655.50
  4. Step 4: Simplify right side
    822,121,939x = 3,763,835,347,019,089,920
  5. Step 5: Solve for x
    x = 3,763,835,347,019,089,920/822,121,939
  6. Step 6: Final answer
    x = 4,578,195,968.83

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.