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Finding the Fourth Proportional to 444,903.68, 667,420.59 and 129,319.58

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Solution

The fourth proportional to 444,903.68, 667,420.59 and 129,319.58 is: 193,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,903.68 : 667,420.59 = 129,319.58 : x
  2. Step 2: Convert to fraction form
    444,903.68/667,420.59 = 129,319.58/x
  3. Step 3: Cross multiply
    444,903.68x = 667,420.59 × 129,319.58
  4. Step 4: Simplify right side
    444,903.68x = 86,310,550,382.15
  5. Step 5: Solve for x
    x = 86,310,550,382.15/444,903.68
  6. Step 6: Final answer
    x = 193,998.28

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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.