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Finding the Third Proportional to 3,508,178,728.50 and 7,800,730,952.91

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Solution

The third proportional to 3,508,178,728.50 and 7,800,730,952.91 is: 17,345,582,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,508,178,728.50 : 7,800,730,952.91 = 7,800,730,952.91 : x
  2. Step 2: Convert to fraction form
    3,508,178,728.50/7,800,730,952.91 = 7,800,730,952.91/x
  3. Step 3: Cross multiply
    3,508,178,728.50x = 7,800,730,952.91 × 7,800,730,952.91
  4. Step 4: Simplify right side
    3,508,178,728.50x = 60,851,403,399,625,752,576
  5. Step 5: Solve for x
    x = 60,851,403,399,625,752,576/3,508,178,728.50
  6. Step 6: Final answer
    x = 17,345,582,454.30

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.