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Finding the Fourth Proportional to 382,414.84, 527,732.92 and 212,645.32

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Solution

The fourth proportional to 382,414.84, 527,732.92 and 212,645.32 is: 293,450.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,414.84 : 527,732.92 = 212,645.32 : x
  2. Step 2: Convert to fraction form
    382,414.84/527,732.92 = 212,645.32/x
  3. Step 3: Cross multiply
    382,414.84x = 527,732.92 × 212,645.32
  4. Step 4: Simplify right side
    382,414.84x = 112,219,935,647.93
  5. Step 5: Solve for x
    x = 112,219,935,647.93/382,414.84
  6. Step 6: Final answer
    x = 293,450.79

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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.