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Finding the Fourth Proportional to 131,406,371.20, 197,109,556.80 and 131,406,371.20

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Solution

The fourth proportional to 131,406,371.20, 197,109,556.80 and 131,406,371.20 is: 197,109,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,406,371.20 : 197,109,556.80 = 131,406,371.20 : x
  2. Step 2: Convert to fraction form
    131,406,371.20/197,109,556.80 = 131,406,371.20/x
  3. Step 3: Cross multiply
    131,406,371.20x = 197,109,556.80 × 131,406,371.20
  4. Step 4: Simplify right side
    131,406,371.20x = 25,901,451,587,928,288
  5. Step 5: Solve for x
    x = 25,901,451,587,928,288/131,406,371.20
  6. Step 6: Final answer
    x = 197,109,556.80

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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.