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Finding the Fourth Proportional to 444,632.10, 667,034.55 and 129,099.30

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Solution

The fourth proportional to 444,632.10, 667,034.55 and 129,099.30 is: 193,674.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,632.10 : 667,034.55 = 129,099.30 : x
  2. Step 2: Convert to fraction form
    444,632.10/667,034.55 = 129,099.30/x
  3. Step 3: Cross multiply
    444,632.10x = 667,034.55 × 129,099.30
  4. Step 4: Simplify right side
    444,632.10x = 86,113,693,480.82
  5. Step 5: Solve for x
    x = 86,113,693,480.82/444,632.10
  6. Step 6: Final answer
    x = 193,674.04

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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.