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Finding the Fourth Proportional to 103,990.96, 155,986.44 and 33,870.27

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Solution

The fourth proportional to 103,990.96, 155,986.44 and 33,870.27 is: 50,805.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,990.96 : 155,986.44 = 33,870.27 : x
  2. Step 2: Convert to fraction form
    103,990.96/155,986.44 = 33,870.27/x
  3. Step 3: Cross multiply
    103,990.96x = 155,986.44 × 33,870.27
  4. Step 4: Simplify right side
    103,990.96x = 5,283,302,839.14
  5. Step 5: Solve for x
    x = 5,283,302,839.14/103,990.96
  6. Step 6: Final answer
    x = 50,805.41

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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.