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Finding the Fourth Proportional to 789,187,851.90, 1,183,781,777.85 and 789,187,851.90

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Solution

The fourth proportional to 789,187,851.90, 1,183,781,777.85 and 789,187,851.90 is: 1,183,781,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,187,851.90 : 1,183,781,777.85 = 789,187,851.90 : x
  2. Step 2: Convert to fraction form
    789,187,851.90/1,183,781,777.85 = 789,187,851.90/x
  3. Step 3: Cross multiply
    789,187,851.90x = 1,183,781,777.85 × 789,187,851.90
  4. Step 4: Simplify right side
    789,187,851.90x = 934,226,198,379,804,416
  5. Step 5: Solve for x
    x = 934,226,198,379,804,416/789,187,851.90
  6. Step 6: Final answer
    x = 1,183,781,777.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.