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Finding the Fourth Proportional to 281,519.82, 388,493.62 and 154,195.52

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Solution

The fourth proportional to 281,519.82, 388,493.62 and 154,195.52 is: 212,787.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,519.82 : 388,493.62 = 154,195.52 : x
  2. Step 2: Convert to fraction form
    281,519.82/388,493.62 = 154,195.52/x
  3. Step 3: Cross multiply
    281,519.82x = 388,493.62 × 154,195.52
  4. Step 4: Simplify right side
    281,519.82x = 59,903,973,424.63
  5. Step 5: Solve for x
    x = 59,903,973,424.63/281,519.82
  6. Step 6: Final answer
    x = 212,787.77

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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.