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Finding the Fourth Proportional to 139,968,178.20, 196,157,003.40 and 139,968,178.20

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Solution

The fourth proportional to 139,968,178.20, 196,157,003.40 and 139,968,178.20 is: 196,157,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,178.20 : 196,157,003.40 = 139,968,178.20 : x
  2. Step 2: Convert to fraction form
    139,968,178.20/196,157,003.40 = 139,968,178.20/x
  3. Step 3: Cross multiply
    139,968,178.20x = 196,157,003.40 × 139,968,178.20
  4. Step 4: Simplify right side
    139,968,178.20x = 27,455,738,407,069,204
  5. Step 5: Solve for x
    x = 27,455,738,407,069,204/139,968,178.20
  6. Step 6: Final answer
    x = 196,157,003.40

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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.