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Finding the Fourth Proportional to 629,857,968.40, 944,786,952.60 and 580,115,090.80

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Solution

The fourth proportional to 629,857,968.40, 944,786,952.60 and 580,115,090.80 is: 870,172,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,968.40 : 944,786,952.60 = 580,115,090.80 : x
  2. Step 2: Convert to fraction form
    629,857,968.40/944,786,952.60 = 580,115,090.80/x
  3. Step 3: Cross multiply
    629,857,968.40x = 944,786,952.60 × 580,115,090.80
  4. Step 4: Simplify right side
    629,857,968.40x = 548,085,168,794,204,288
  5. Step 5: Solve for x
    x = 548,085,168,794,204,288/629,857,968.40
  6. Step 6: Final answer
    x = 870,172,636.20

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1.5x scale

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.