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Finding the Fourth Proportional to 196,993,449.80, 295,490,174.70 and 115,364,112.20

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Solution

The fourth proportional to 196,993,449.80, 295,490,174.70 and 115,364,112.20 is: 173,046,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,993,449.80 : 295,490,174.70 = 115,364,112.20 : x
  2. Step 2: Convert to fraction form
    196,993,449.80/295,490,174.70 = 115,364,112.20/x
  3. Step 3: Cross multiply
    196,993,449.80x = 295,490,174.70 × 115,364,112.20
  4. Step 4: Simplify right side
    196,993,449.80x = 34,088,961,668,088,400
  5. Step 5: Solve for x
    x = 34,088,961,668,088,400/196,993,449.80
  6. Step 6: Final answer
    x = 173,046,168.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.