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Finding the Fourth Proportional to 694,259.74, 958,167.07 and 388,353.11

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Solution

The fourth proportional to 694,259.74, 958,167.07 and 388,353.11 is: 535,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,259.74 : 958,167.07 = 388,353.11 : x
  2. Step 2: Convert to fraction form
    694,259.74/958,167.07 = 388,353.11/x
  3. Step 3: Cross multiply
    694,259.74x = 958,167.07 × 388,353.11
  4. Step 4: Simplify right side
    694,259.74x = 372,107,162,958.62
  5. Step 5: Solve for x
    x = 372,107,162,958.62/694,259.74
  6. Step 6: Final answer
    x = 535,976.87

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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.