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Finding the Fourth Proportional to 196,992,065.30, 295,488,097.95 and 81,938,369.30

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Solution

The fourth proportional to 196,992,065.30, 295,488,097.95 and 81,938,369.30 is: 122,907,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,992,065.30 : 295,488,097.95 = 81,938,369.30 : x
  2. Step 2: Convert to fraction form
    196,992,065.30/295,488,097.95 = 81,938,369.30/x
  3. Step 3: Cross multiply
    196,992,065.30x = 295,488,097.95 × 81,938,369.30
  4. Step 4: Simplify right side
    196,992,065.30x = 24,211,812,893,581,672
  5. Step 5: Solve for x
    x = 24,211,812,893,581,672/196,992,065.30
  6. Step 6: Final answer
    x = 122,907,553.95

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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.