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Finding the Fourth Proportional to 1,192,604.74, 1,789,736.55 and 770,834.50

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Solution

The fourth proportional to 1,192,604.74, 1,789,736.55 and 770,834.50 is: 1,156,787.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,604.74 : 1,789,736.55 = 770,834.50 : x
  2. Step 2: Convert to fraction form
    1,192,604.74/1,789,736.55 = 770,834.50/x
  3. Step 3: Cross multiply
    1,192,604.74x = 1,789,736.55 × 770,834.50
  4. Step 4: Simplify right side
    1,192,604.74x = 1,379,590,678,650.98
  5. Step 5: Solve for x
    x = 1,379,590,678,650.98/1,192,604.74
  6. Step 6: Final answer
    x = 1,156,787.85

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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.