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Finding the Fourth Proportional to 331,736,163.80, 497,604,245.70 and 211,102,410.20

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Solution

The fourth proportional to 331,736,163.80, 497,604,245.70 and 211,102,410.20 is: 316,653,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,736,163.80 : 497,604,245.70 = 211,102,410.20 : x
  2. Step 2: Convert to fraction form
    331,736,163.80/497,604,245.70 = 211,102,410.20/x
  3. Step 3: Cross multiply
    331,736,163.80x = 497,604,245.70 × 211,102,410.20
  4. Step 4: Simplify right side
    331,736,163.80x = 105,045,455,593,022,976
  5. Step 5: Solve for x
    x = 105,045,455,593,022,976/331,736,163.80
  6. Step 6: Final answer
    x = 316,653,615.30

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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.