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Finding the Fourth Proportional to 196,188.72, 270,737.85 and 115,619.64

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Solution

The fourth proportional to 196,188.72, 270,737.85 and 115,619.64 is: 159,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,188.72 : 270,737.85 = 115,619.64 : x
  2. Step 2: Convert to fraction form
    196,188.72/270,737.85 = 115,619.64/x
  3. Step 3: Cross multiply
    196,188.72x = 270,737.85 × 115,619.64
  4. Step 4: Simplify right side
    196,188.72x = 31,302,612,751.37
  5. Step 5: Solve for x
    x = 31,302,612,751.37/196,188.72
  6. Step 6: Final answer
    x = 159,553.58

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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.