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Finding the Fourth Proportional to 444,907.65, 667,475.22 and 129,364.56

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Solution

The fourth proportional to 444,907.65, 667,475.22 and 129,364.56 is: 194,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,907.65 : 667,475.22 = 129,364.56 : x
  2. Step 2: Convert to fraction form
    444,907.65/667,475.22 = 129,364.56/x
  3. Step 3: Cross multiply
    444,907.65x = 667,475.22 × 129,364.56
  4. Step 4: Simplify right side
    444,907.65x = 86,347,638,146.20
  5. Step 5: Solve for x
    x = 86,347,638,146.20/444,907.65
  6. Step 6: Final answer
    x = 194,079.91

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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.