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Finding the Fourth Proportional to 281,340.63, 388,250.09 and 154,016.22

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Solution

The fourth proportional to 281,340.63, 388,250.09 and 154,016.22 is: 212,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,340.63 : 388,250.09 = 154,016.22 : x
  2. Step 2: Convert to fraction form
    281,340.63/388,250.09 = 154,016.22/x
  3. Step 3: Cross multiply
    281,340.63x = 388,250.09 × 154,016.22
  4. Step 4: Simplify right side
    281,340.63x = 59,796,810,506.38
  5. Step 5: Solve for x
    x = 59,796,810,506.38/281,340.63
  6. Step 6: Final answer
    x = 212,542.39

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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.