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Finding the Fourth Proportional to 188,389, 259,861.44 and 111,856.12

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Solution

The fourth proportional to 188,389, 259,861.44 and 111,856.12 is: 154,292.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,389 : 259,861.44 = 111,856.12 : x
  2. Step 2: Convert to fraction form
    188,389/259,861.44 = 111,856.12/x
  3. Step 3: Cross multiply
    188,389x = 259,861.44 × 111,856.12
  4. Step 4: Simplify right side
    188,389x = 29,067,092,416.01
  5. Step 5: Solve for x
    x = 29,067,092,416.01/188,389
  6. Step 6: Final answer
    x = 154,292.94

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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.