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Finding the Fourth Proportional to 694,097.28, 957,847.50 and 388,170.18

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Solution

The fourth proportional to 694,097.28, 957,847.50 and 388,170.18 is: 535,671.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,097.28 : 957,847.50 = 388,170.18 : x
  2. Step 2: Convert to fraction form
    694,097.28/957,847.50 = 388,170.18/x
  3. Step 3: Cross multiply
    694,097.28x = 957,847.50 × 388,170.18
  4. Step 4: Simplify right side
    694,097.28x = 371,807,836,487.55
  5. Step 5: Solve for x
    x = 371,807,836,487.55/694,097.28
  6. Step 6: Final answer
    x = 535,671.08

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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.