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Finding the Fourth Proportional to 81,797.80, 122,696.72 and 29,200.44

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Solution

The fourth proportional to 81,797.80, 122,696.72 and 29,200.44 is: 43,800.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,797.80 : 122,696.72 = 29,200.44 : x
  2. Step 2: Convert to fraction form
    81,797.80/122,696.72 = 29,200.44/x
  3. Step 3: Cross multiply
    81,797.80x = 122,696.72 × 29,200.44
  4. Step 4: Simplify right side
    81,797.80x = 3,582,798,210.56
  5. Step 5: Solve for x
    x = 3,582,798,210.56/81,797.80
  6. Step 6: Final answer
    x = 43,800.67

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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.