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Finding the Fourth Proportional to 330,085.44, 455,447.82 and 194,069.76

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Solution

The fourth proportional to 330,085.44, 455,447.82 and 194,069.76 is: 267,775.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,085.44 : 455,447.82 = 194,069.76 : x
  2. Step 2: Convert to fraction form
    330,085.44/455,447.82 = 194,069.76/x
  3. Step 3: Cross multiply
    330,085.44x = 455,447.82 × 194,069.76
  4. Step 4: Simplify right side
    330,085.44x = 88,388,649,119.92
  5. Step 5: Solve for x
    x = 88,388,649,119.92/330,085.44
  6. Step 6: Final answer
    x = 267,775.06

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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.