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Finding the Fourth Proportional to 81,366.90, 122,069.84 and 33,955.62

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Solution

The fourth proportional to 81,366.90, 122,069.84 and 33,955.62 is: 50,941.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,366.90 : 122,069.84 = 33,955.62 : x
  2. Step 2: Convert to fraction form
    81,366.90/122,069.84 = 33,955.62/x
  3. Step 3: Cross multiply
    81,366.90x = 122,069.84 × 33,955.62
  4. Step 4: Simplify right side
    81,366.90x = 4,144,956,930.72
  5. Step 5: Solve for x
    x = 4,144,956,930.72/81,366.90
  6. Step 6: Final answer
    x = 50,941.56

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1.5x scale

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.