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Finding the Fourth Proportional to 444,640.68, 666,756.90 and 191,800

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Solution

The fourth proportional to 444,640.68, 666,756.90 and 191,800 is: 287,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,640.68 : 666,756.90 = 191,800 : x
  2. Step 2: Convert to fraction form
    444,640.68/666,756.90 = 191,800/x
  3. Step 3: Cross multiply
    444,640.68x = 666,756.90 × 191,800
  4. Step 4: Simplify right side
    444,640.68x = 127,883,973,420
  5. Step 5: Solve for x
    x = 127,883,973,420/444,640.68
  6. Step 6: Final answer
    x = 287,611.95

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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.