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Finding the Fourth Proportional to 263,697.57, 395,557.29 and 76,709.07

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Solution

The fourth proportional to 263,697.57, 395,557.29 and 76,709.07 is: 115,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,697.57 : 395,557.29 = 76,709.07 : x
  2. Step 2: Convert to fraction form
    263,697.57/395,557.29 = 76,709.07/x
  3. Step 3: Cross multiply
    263,697.57x = 395,557.29 × 76,709.07
  4. Step 4: Simplify right side
    263,697.57x = 30,342,831,847.62
  5. Step 5: Solve for x
    x = 30,342,831,847.62/263,697.57
  6. Step 6: Final answer
    x = 115,066.79

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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.