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Finding the Third Proportional to 7,782,030 and 12,431,961

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Solution

The third proportional to 7,782,030 and 12,431,961 is: 19,860,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782,030 : 12,431,961 = 12,431,961 : x
  2. Step 2: Convert to fraction form
    7,782,030/12,431,961 = 12,431,961/x
  3. Step 3: Cross multiply
    7,782,030x = 12,431,961 × 12,431,961
  4. Step 4: Simplify right side
    7,782,030x = 154,553,654,305,521
  5. Step 5: Solve for x
    x = 154,553,654,305,521/7,782,030
  6. Step 6: Final answer
    x = 19,860,326.20

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.