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Finding the Fourth Proportional to 691,203, 1,036,863.90 and 192,567

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Solution

The fourth proportional to 691,203, 1,036,863.90 and 192,567 is: 288,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,203 : 1,036,863.90 = 192,567 : x
  2. Step 2: Convert to fraction form
    691,203/1,036,863.90 = 192,567/x
  3. Step 3: Cross multiply
    691,203x = 1,036,863.90 × 192,567
  4. Step 4: Simplify right side
    691,203x = 199,665,770,631.30
  5. Step 5: Solve for x
    x = 199,665,770,631.30/691,203
  6. Step 6: Final answer
    x = 288,867.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.