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Finding the Fourth Proportional to 203,190.66, 280,379.16 and 117,148.68

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Solution

The fourth proportional to 203,190.66, 280,379.16 and 117,148.68 is: 161,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,190.66 : 280,379.16 = 117,148.68 : x
  2. Step 2: Convert to fraction form
    203,190.66/280,379.16 = 117,148.68/x
  3. Step 3: Cross multiply
    203,190.66x = 280,379.16 × 117,148.68
  4. Step 4: Simplify right side
    203,190.66x = 32,846,048,493.51
  5. Step 5: Solve for x
    x = 32,846,048,493.51/203,190.66
  6. Step 6: Final answer
    x = 161,651.37

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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.