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Finding the Fourth Proportional to 383,144.67, 528,739.45 and 222,093.05

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Solution

The fourth proportional to 383,144.67, 528,739.45 and 222,093.05 is: 306,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,144.67 : 528,739.45 = 222,093.05 : x
  2. Step 2: Convert to fraction form
    383,144.67/528,739.45 = 222,093.05/x
  3. Step 3: Cross multiply
    383,144.67x = 528,739.45 × 222,093.05
  4. Step 4: Simplify right side
    383,144.67x = 117,429,357,105.82
  5. Step 5: Solve for x
    x = 117,429,357,105.82/383,144.67
  6. Step 6: Final answer
    x = 306,488.30

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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.