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Finding the Fourth Proportional to 190,269, 262,571.22 and 105,391.53

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Solution

The fourth proportional to 190,269, 262,571.22 and 105,391.53 is: 145,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,269 : 262,571.22 = 105,391.53 : x
  2. Step 2: Convert to fraction form
    190,269/262,571.22 = 105,391.53/x
  3. Step 3: Cross multiply
    190,269x = 262,571.22 × 105,391.53
  4. Step 4: Simplify right side
    190,269x = 27,672,782,609.77
  5. Step 5: Solve for x
    x = 27,672,782,609.77/190,269
  6. Step 6: Final answer
    x = 145,440.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.