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Finding the Fourth Proportional to 276,408.56, 414,109.83 and 191,990.36

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Solution

The fourth proportional to 276,408.56, 414,109.83 and 191,990.36 is: 287,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,408.56 : 414,109.83 = 191,990.36 : x
  2. Step 2: Convert to fraction form
    276,408.56/414,109.83 = 191,990.36/x
  3. Step 3: Cross multiply
    276,408.56x = 414,109.83 × 191,990.36
  4. Step 4: Simplify right side
    276,408.56x = 79,505,095,341.24
  5. Step 5: Solve for x
    x = 79,505,095,341.24/276,408.56
  6. Step 6: Final answer
    x = 287,636.15

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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.