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Finding the Fourth Proportional to 444,213.80, 666,161.10 and 128,605.40

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Solution

The fourth proportional to 444,213.80, 666,161.10 and 128,605.40 is: 192,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,213.80 : 666,161.10 = 128,605.40 : x
  2. Step 2: Convert to fraction form
    444,213.80/666,161.10 = 128,605.40/x
  3. Step 3: Cross multiply
    444,213.80x = 666,161.10 × 128,605.40
  4. Step 4: Simplify right side
    444,213.80x = 85,671,914,729.94
  5. Step 5: Solve for x
    x = 85,671,914,729.94/444,213.80
  6. Step 6: Final answer
    x = 192,861.89

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1.5x scale

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.