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Finding the Fourth Proportional to 139,968,231.80, 195,502,028.20 and 139,968,231.80

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Solution

The fourth proportional to 139,968,231.80, 195,502,028.20 and 139,968,231.80 is: 195,502,028.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,231.80 : 195,502,028.20 = 139,968,231.80 : x
  2. Step 2: Convert to fraction form
    139,968,231.80/195,502,028.20 = 139,968,231.80/x
  3. Step 3: Cross multiply
    139,968,231.80x = 195,502,028.20 × 139,968,231.80
  4. Step 4: Simplify right side
    139,968,231.80x = 27,364,073,200,467,736
  5. Step 5: Solve for x
    x = 27,364,073,200,467,736/139,968,231.80
  6. Step 6: Final answer
    x = 195,502,028.20

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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.