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Finding the Fourth Proportional to 911,863.80, 1,367,795.70 and 734,716.80

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Solution

The fourth proportional to 911,863.80, 1,367,795.70 and 734,716.80 is: 1,102,075.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,863.80 : 1,367,795.70 = 734,716.80 : x
  2. Step 2: Convert to fraction form
    911,863.80/1,367,795.70 = 734,716.80/x
  3. Step 3: Cross multiply
    911,863.80x = 1,367,795.70 × 734,716.80
  4. Step 4: Simplify right side
    911,863.80x = 1,004,942,479,757.76
  5. Step 5: Solve for x
    x = 1,004,942,479,757.76/911,863.80
  6. Step 6: Final answer
    x = 1,102,075.20

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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.