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Finding the Fourth Proportional to 129,309,634.20, 193,964,451.30 and 129,309,634.20

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Solution

The fourth proportional to 129,309,634.20, 193,964,451.30 and 129,309,634.20 is: 193,964,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,309,634.20 : 193,964,451.30 = 129,309,634.20 : x
  2. Step 2: Convert to fraction form
    129,309,634.20/193,964,451.30 = 129,309,634.20/x
  3. Step 3: Cross multiply
    129,309,634.20x = 193,964,451.30 × 129,309,634.20
  4. Step 4: Simplify right side
    129,309,634.20x = 25,081,472,245,406,716
  5. Step 5: Solve for x
    x = 25,081,472,245,406,716/129,309,634.20
  6. Step 6: Final answer
    x = 193,964,451.30

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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.