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Finding the Fourth Proportional to 103,881.20, 155,723.16 and 33,711.44

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Solution

The fourth proportional to 103,881.20, 155,723.16 and 33,711.44 is: 50,535.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.20 : 155,723.16 = 33,711.44 : x
  2. Step 2: Convert to fraction form
    103,881.20/155,723.16 = 33,711.44/x
  3. Step 3: Cross multiply
    103,881.20x = 155,723.16 × 33,711.44
  4. Step 4: Simplify right side
    103,881.20x = 5,249,651,964.95
  5. Step 5: Solve for x
    x = 5,249,651,964.95/103,881.20
  6. Step 6: Final answer
    x = 50,535.15

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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.