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Finding the Fourth Proportional to 444,990.39, 667,485.78 and 108,031.47

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Solution

The fourth proportional to 444,990.39, 667,485.78 and 108,031.47 is: 162,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,990.39 : 667,485.78 = 108,031.47 : x
  2. Step 2: Convert to fraction form
    444,990.39/667,485.78 = 108,031.47/x
  3. Step 3: Cross multiply
    444,990.39x = 667,485.78 × 108,031.47
  4. Step 4: Simplify right side
    444,990.39x = 72,109,470,017.50
  5. Step 5: Solve for x
    x = 72,109,470,017.50/444,990.39
  6. Step 6: Final answer
    x = 162,047.25

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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.