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Finding the Fourth Proportional to 611,995,465.80, 917,993,198.70 and 441,084,040.20

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Solution

The fourth proportional to 611,995,465.80, 917,993,198.70 and 441,084,040.20 is: 661,626,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,995,465.80 : 917,993,198.70 = 441,084,040.20 : x
  2. Step 2: Convert to fraction form
    611,995,465.80/917,993,198.70 = 441,084,040.20/x
  3. Step 3: Cross multiply
    611,995,465.80x = 917,993,198.70 × 441,084,040.20
  4. Step 4: Simplify right side
    611,995,465.80x = 404,912,148,958,717,376
  5. Step 5: Solve for x
    x = 404,912,148,958,717,376/611,995,465.80
  6. Step 6: Final answer
    x = 661,626,060.30

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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.