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Finding the Fourth Proportional to 196,992,071.80, 295,488,107.70 and 124,432,660.60

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Solution

The fourth proportional to 196,992,071.80, 295,488,107.70 and 124,432,660.60 is: 186,648,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,992,071.80 : 295,488,107.70 = 124,432,660.60 : x
  2. Step 2: Convert to fraction form
    196,992,071.80/295,488,107.70 = 124,432,660.60/x
  3. Step 3: Cross multiply
    196,992,071.80x = 295,488,107.70 × 124,432,660.60
  4. Step 4: Simplify right side
    196,992,071.80x = 36,768,371,416,770,344
  5. Step 5: Solve for x
    x = 36,768,371,416,770,344/196,992,071.80
  6. Step 6: Final answer
    x = 186,648,990.90

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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.