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Finding the Fourth Proportional to 409,654,410.80, 614,481,616.20 and 409,654,410.80

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Solution

The fourth proportional to 409,654,410.80, 614,481,616.20 and 409,654,410.80 is: 614,481,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,654,410.80 : 614,481,616.20 = 409,654,410.80 : x
  2. Step 2: Convert to fraction form
    409,654,410.80/614,481,616.20 = 409,654,410.80/x
  3. Step 3: Cross multiply
    409,654,410.80x = 614,481,616.20 × 409,654,410.80
  4. Step 4: Simplify right side
    409,654,410.80x = 251,725,104,431,842,752
  5. Step 5: Solve for x
    x = 251,725,104,431,842,752/409,654,410.80
  6. Step 6: Final answer
    x = 614,481,616.20

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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.