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Finding the Fourth Proportional to 268,474.40, 403,586.40 and 190,131.20

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Solution

The fourth proportional to 268,474.40, 403,586.40 and 190,131.20 is: 285,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,474.40 : 403,586.40 = 190,131.20 : x
  2. Step 2: Convert to fraction form
    268,474.40/403,586.40 = 190,131.20/x
  3. Step 3: Cross multiply
    268,474.40x = 403,586.40 × 190,131.20
  4. Step 4: Simplify right side
    268,474.40x = 76,734,366,535.68
  5. Step 5: Solve for x
    x = 76,734,366,535.68/268,474.40
  6. Step 6: Final answer
    x = 285,816.33

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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.