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Finding the Fourth Proportional to 639,257.84, 959,077.56 and 189,993.68

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Solution

The fourth proportional to 639,257.84, 959,077.56 and 189,993.68 is: 285,047.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,257.84 : 959,077.56 = 189,993.68 : x
  2. Step 2: Convert to fraction form
    639,257.84/959,077.56 = 189,993.68/x
  3. Step 3: Cross multiply
    639,257.84x = 959,077.56 × 189,993.68
  4. Step 4: Simplify right side
    639,257.84x = 182,218,675,029.82
  5. Step 5: Solve for x
    x = 182,218,675,029.82/639,257.84
  6. Step 6: Final answer
    x = 285,047.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.