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Finding the Fourth Proportional to 694,080.83, 957,880.37 and 388,185.68

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Solution

The fourth proportional to 694,080.83, 957,880.37 and 388,185.68 is: 535,723.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,080.83 : 957,880.37 = 388,185.68 : x
  2. Step 2: Convert to fraction form
    694,080.83/957,880.37 = 388,185.68/x
  3. Step 3: Cross multiply
    694,080.83x = 957,880.37 × 388,185.68
  4. Step 4: Simplify right side
    694,080.83x = 371,835,436,056.77
  5. Step 5: Solve for x
    x = 371,835,436,056.77/694,080.83
  6. Step 6: Final answer
    x = 535,723.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.