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Finding the Fourth Proportional to 218,512,530.90, 327,768,796.35 and 218,512,530.90

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Solution

The fourth proportional to 218,512,530.90, 327,768,796.35 and 218,512,530.90 is: 327,768,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,512,530.90 : 327,768,796.35 = 218,512,530.90 : x
  2. Step 2: Convert to fraction form
    218,512,530.90/327,768,796.35 = 218,512,530.90/x
  3. Step 3: Cross multiply
    218,512,530.90x = 327,768,796.35 × 218,512,530.90
  4. Step 4: Simplify right side
    218,512,530.90x = 71,621,589,240,485,192
  5. Step 5: Solve for x
    x = 71,621,589,240,485,192/218,512,530.90
  6. Step 6: Final answer
    x = 327,768,796.35

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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.