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Finding the Fourth Proportional to 196,992,053.80, 295,488,080.70 and 81,938,357.80

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Solution

The fourth proportional to 196,992,053.80, 295,488,080.70 and 81,938,357.80 is: 122,907,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,992,053.80 : 295,488,080.70 = 81,938,357.80 : x
  2. Step 2: Convert to fraction form
    196,992,053.80/295,488,080.70 = 81,938,357.80/x
  3. Step 3: Cross multiply
    196,992,053.80x = 295,488,080.70 × 81,938,357.80
  4. Step 4: Simplify right side
    196,992,053.80x = 24,211,808,082,031,872
  5. Step 5: Solve for x
    x = 24,211,808,082,031,872/196,992,053.80
  6. Step 6: Final answer
    x = 122,907,536.70

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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.