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Finding the Fourth Proportional to 281,853.54, 388,960.92 and 161,010.90

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Solution

The fourth proportional to 281,853.54, 388,960.92 and 161,010.90 is: 222,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,853.54 : 388,960.92 = 161,010.90 : x
  2. Step 2: Convert to fraction form
    281,853.54/388,960.92 = 161,010.90/x
  3. Step 3: Cross multiply
    281,853.54x = 388,960.92 × 161,010.90
  4. Step 4: Simplify right side
    281,853.54x = 62,626,947,794.03
  5. Step 5: Solve for x
    x = 62,626,947,794.03/281,853.54
  6. Step 6: Final answer
    x = 222,196.78

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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.