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Finding the Fourth Proportional to 281,818.98, 388,906.92 and 154,494.54

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Solution

The fourth proportional to 281,818.98, 388,906.92 and 154,494.54 is: 213,200.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,818.98 : 388,906.92 = 154,494.54 : x
  2. Step 2: Convert to fraction form
    281,818.98/388,906.92 = 154,494.54/x
  3. Step 3: Cross multiply
    281,818.98x = 388,906.92 × 154,494.54
  4. Step 4: Simplify right side
    281,818.98x = 60,083,995,708.22
  5. Step 5: Solve for x
    x = 60,083,995,708.22/281,818.98
  6. Step 6: Final answer
    x = 213,200.67

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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.