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Finding the Third Proportional to 451,970,685 and 639,714,024

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Solution

The third proportional to 451,970,685 and 639,714,024 is: 905,443,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,970,685 : 639,714,024 = 639,714,024 : x
  2. Step 2: Convert to fraction form
    451,970,685/639,714,024 = 639,714,024/x
  3. Step 3: Cross multiply
    451,970,685x = 639,714,024 × 639,714,024
  4. Step 4: Simplify right side
    451,970,685x = 409,234,032,502,272,576
  5. Step 5: Solve for x
    x = 409,234,032,502,272,576/451,970,685
  6. Step 6: Final answer
    x = 905,443,751.30

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.