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Finding the Fourth Proportional to 505,954.64, 698,157.96 and 279,586.64

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Solution

The fourth proportional to 505,954.64, 698,157.96 and 279,586.64 is: 385,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,954.64 : 698,157.96 = 279,586.64 : x
  2. Step 2: Convert to fraction form
    505,954.64/698,157.96 = 279,586.64/x
  3. Step 3: Cross multiply
    505,954.64x = 698,157.96 × 279,586.64
  4. Step 4: Simplify right side
    505,954.64x = 195,195,638,225.65
  5. Step 5: Solve for x
    x = 195,195,638,225.65/505,954.64
  6. Step 6: Final answer
    x = 385,796.72

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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.