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Finding the Fourth Proportional to 281,697.77, 388,745.98 and 154,370.63

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Solution

The fourth proportional to 281,697.77, 388,745.98 and 154,370.63 is: 213,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,697.77 : 388,745.98 = 154,370.63 : x
  2. Step 2: Convert to fraction form
    281,697.77/388,745.98 = 154,370.63/x
  3. Step 3: Cross multiply
    281,697.77x = 388,745.98 × 154,370.63
  4. Step 4: Simplify right side
    281,697.77x = 60,010,959,512.91
  5. Step 5: Solve for x
    x = 60,010,959,512.91/281,697.77
  6. Step 6: Final answer
    x = 213,033.14

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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.