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Finding the Fourth Proportional to 444,114, 666,176.67 and 128,571.21

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Solution

The fourth proportional to 444,114, 666,176.67 and 128,571.21 is: 192,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,114 : 666,176.67 = 128,571.21 : x
  2. Step 2: Convert to fraction form
    444,114/666,176.67 = 128,571.21/x
  3. Step 3: Cross multiply
    444,114x = 666,176.67 × 128,571.21
  4. Step 4: Simplify right side
    444,114x = 85,651,140,535.67
  5. Step 5: Solve for x
    x = 85,651,140,535.67/444,114
  6. Step 6: Final answer
    x = 192,858.46

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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.