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Finding the Fourth Proportional to 322,688.56, 445,220.19 and 193,546.21

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Solution

The fourth proportional to 322,688.56, 445,220.19 and 193,546.21 is: 267,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,688.56 : 445,220.19 = 193,546.21 : x
  2. Step 2: Convert to fraction form
    322,688.56/445,220.19 = 193,546.21/x
  3. Step 3: Cross multiply
    322,688.56x = 445,220.19 × 193,546.21
  4. Step 4: Simplify right side
    322,688.56x = 86,170,680,389.98
  5. Step 5: Solve for x
    x = 86,170,680,389.98/322,688.56
  6. Step 6: Final answer
    x = 267,039.77

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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.