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Finding the Third Proportional to 7,777,859 and 12,173,381

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Solution

The third proportional to 7,777,859 and 12,173,381 is: 19,052,955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,859 : 12,173,381 = 12,173,381 : x
  2. Step 2: Convert to fraction form
    7,777,859/12,173,381 = 12,173,381/x
  3. Step 3: Cross multiply
    7,777,859x = 12,173,381 × 12,173,381
  4. Step 4: Simplify right side
    7,777,859x = 148,191,204,971,161
  5. Step 5: Solve for x
    x = 148,191,204,971,161/7,777,859
  6. Step 6: Final answer
    x = 19,052,955.96

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.