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Finding the Fourth Proportional to 139,278,625.20, 195,191,629.20 and 139,278,625.20

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Solution

The fourth proportional to 139,278,625.20, 195,191,629.20 and 139,278,625.20 is: 195,191,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,278,625.20 : 195,191,629.20 = 139,278,625.20 : x
  2. Step 2: Convert to fraction form
    139,278,625.20/195,191,629.20 = 139,278,625.20/x
  3. Step 3: Cross multiply
    139,278,625.20x = 195,191,629.20 × 139,278,625.20
  4. Step 4: Simplify right side
    139,278,625.20x = 27,186,021,765,524,172
  5. Step 5: Solve for x
    x = 27,186,021,765,524,172/139,278,625.20
  6. Step 6: Final answer
    x = 195,191,629.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.