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Finding the Fourth Proportional to 129,310,266.45, 193,965,399.69 and 129,310,266.45

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Solution

The fourth proportional to 129,310,266.45, 193,965,399.69 and 129,310,266.45 is: 193,965,399.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,310,266.45 : 193,965,399.69 = 129,310,266.45 : x
  2. Step 2: Convert to fraction form
    129,310,266.45/193,965,399.69 = 129,310,266.45/x
  3. Step 3: Cross multiply
    129,310,266.45x = 193,965,399.69 × 129,310,266.45
  4. Step 4: Simplify right side
    129,310,266.45x = 25,081,717,515,994,648
  5. Step 5: Solve for x
    x = 25,081,717,515,994,648/129,310,266.45
  6. Step 6: Final answer
    x = 193,965,399.69

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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.