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Finding the Fourth Proportional to 505,558.32, 697,635.36 and 279,186

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Solution

The fourth proportional to 505,558.32, 697,635.36 and 279,186 is: 385,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,558.32 : 697,635.36 = 279,186 : x
  2. Step 2: Convert to fraction form
    505,558.32/697,635.36 = 279,186/x
  3. Step 3: Cross multiply
    505,558.32x = 697,635.36 × 279,186
  4. Step 4: Simplify right side
    505,558.32x = 194,770,025,616.96
  5. Step 5: Solve for x
    x = 194,770,025,616.96/505,558.32
  6. Step 6: Final answer
    x = 385,257.28

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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.