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Finding the Fourth Proportional to 168,081.88, 231,953.03 and 91,600.99

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Solution

The fourth proportional to 168,081.88, 231,953.03 and 91,600.99 is: 126,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,081.88 : 231,953.03 = 91,600.99 : x
  2. Step 2: Convert to fraction form
    168,081.88/231,953.03 = 91,600.99/x
  3. Step 3: Cross multiply
    168,081.88x = 231,953.03 × 91,600.99
  4. Step 4: Simplify right side
    168,081.88x = 21,247,127,181.50
  5. Step 5: Solve for x
    x = 21,247,127,181.50/168,081.88
  6. Step 6: Final answer
    x = 126,409.39

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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.