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Finding the Fourth Proportional to 694,080.78, 957,824.73 and 388,153.68

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Solution

The fourth proportional to 694,080.78, 957,824.73 and 388,153.68 is: 535,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,080.78 : 957,824.73 = 388,153.68 : x
  2. Step 2: Convert to fraction form
    694,080.78/957,824.73 = 388,153.68/x
  3. Step 3: Cross multiply
    694,080.78x = 957,824.73 × 388,153.68
  4. Step 4: Simplify right side
    694,080.78x = 371,783,193,744.51
  5. Step 5: Solve for x
    x = 371,783,193,744.51/694,080.78
  6. Step 6: Final answer
    x = 535,648.31

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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.