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Finding the Fourth Proportional to 188,699.70, 283,040.28 and 70,361.78

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Solution

The fourth proportional to 188,699.70, 283,040.28 and 70,361.78 is: 105,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,699.70 : 283,040.28 = 70,361.78 : x
  2. Step 2: Convert to fraction form
    188,699.70/283,040.28 = 70,361.78/x
  3. Step 3: Cross multiply
    188,699.70x = 283,040.28 × 70,361.78
  4. Step 4: Simplify right side
    188,699.70x = 19,915,217,912.50
  5. Step 5: Solve for x
    x = 19,915,217,912.50/188,699.70
  6. Step 6: Final answer
    x = 105,539.21

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