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Finding the Fourth Proportional to 80,238.99, 110,748.38 and 53,382.63

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Solution

The fourth proportional to 80,238.99, 110,748.38 and 53,382.63 is: 73,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,238.99 : 110,748.38 = 53,382.63 : x
  2. Step 2: Convert to fraction form
    80,238.99/110,748.38 = 53,382.63/x
  3. Step 3: Cross multiply
    80,238.99x = 110,748.38 × 53,382.63
  4. Step 4: Simplify right side
    80,238.99x = 5,912,039,525.73
  5. Step 5: Solve for x
    x = 5,912,039,525.73/80,238.99
  6. Step 6: Final answer
    x = 73,680.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.