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Finding the Fourth Proportional to 694,108.44, 957,651.66 and 388,143.50

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Solution

The fourth proportional to 694,108.44, 957,651.66 and 388,143.50 is: 535,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,108.44 : 957,651.66 = 388,143.50 : x
  2. Step 2: Convert to fraction form
    694,108.44/957,651.66 = 388,143.50/x
  3. Step 3: Cross multiply
    694,108.44x = 957,651.66 × 388,143.50
  4. Step 4: Simplify right side
    694,108.44x = 371,706,262,304.95
  5. Step 5: Solve for x
    x = 371,706,262,304.95/694,108.44
  6. Step 6: Final answer
    x = 535,516.13

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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.