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Finding the Fourth Proportional to 327,021.68, 451,211.10 and 190,978.40

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Solution

The fourth proportional to 327,021.68, 451,211.10 and 190,978.40 is: 263,504.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,021.68 : 451,211.10 = 190,978.40 : x
  2. Step 2: Convert to fraction form
    327,021.68/451,211.10 = 190,978.40/x
  3. Step 3: Cross multiply
    327,021.68x = 451,211.10 × 190,978.40
  4. Step 4: Simplify right side
    327,021.68x = 86,171,573,940.24
  5. Step 5: Solve for x
    x = 86,171,573,940.24/327,021.68
  6. Step 6: Final answer
    x = 263,504.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.