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Finding the Fourth Proportional to 196,993,658.80, 295,490,488.20 and 115,364,321.20

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Solution

The fourth proportional to 196,993,658.80, 295,490,488.20 and 115,364,321.20 is: 173,046,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,993,658.80 : 295,490,488.20 = 115,364,321.20 : x
  2. Step 2: Convert to fraction form
    196,993,658.80/295,490,488.20 = 115,364,321.20/x
  3. Step 3: Cross multiply
    196,993,658.80x = 295,490,488.20 × 115,364,321.20
  4. Step 4: Simplify right side
    196,993,658.80x = 34,089,059,592,249,608
  5. Step 5: Solve for x
    x = 34,089,059,592,249,608/196,993,658.80
  6. Step 6: Final answer
    x = 173,046,481.80

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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.