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Finding the Fourth Proportional to 444,438.33, 666,723.12 and 128,854.23

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Solution

The fourth proportional to 444,438.33, 666,723.12 and 128,854.23 is: 193,300.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,438.33 : 666,723.12 = 128,854.23 : x
  2. Step 2: Convert to fraction form
    444,438.33/666,723.12 = 128,854.23/x
  3. Step 3: Cross multiply
    444,438.33x = 666,723.12 × 128,854.23
  4. Step 4: Simplify right side
    444,438.33x = 85,910,094,250.80
  5. Step 5: Solve for x
    x = 85,910,094,250.80/444,438.33
  6. Step 6: Final answer
    x = 193,300.37

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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.