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Finding the Fourth Proportional to 188,157.34, 259,647.60 and 111,679.66

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Solution

The fourth proportional to 188,157.34, 259,647.60 and 111,679.66 is: 154,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,157.34 : 259,647.60 = 111,679.66 : x
  2. Step 2: Convert to fraction form
    188,157.34/259,647.60 = 111,679.66/x
  3. Step 3: Cross multiply
    188,157.34x = 259,647.60 × 111,679.66
  4. Step 4: Simplify right side
    188,157.34x = 28,997,355,687.82
  5. Step 5: Solve for x
    x = 28,997,355,687.82/188,157.34
  6. Step 6: Final answer
    x = 154,112.27

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1.5x scale

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.