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Finding the Third Proportional to 12,867,911 and 19,603,371

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Solution

The third proportional to 12,867,911 and 19,603,371 is: 29,864,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867,911 : 19,603,371 = 19,603,371 : x
  2. Step 2: Convert to fraction form
    12,867,911/19,603,371 = 19,603,371/x
  3. Step 3: Cross multiply
    12,867,911x = 19,603,371 × 19,603,371
  4. Step 4: Simplify right side
    12,867,911x = 384,292,154,563,641
  5. Step 5: Solve for x
    x = 384,292,154,563,641/12,867,911
  6. Step 6: Final answer
    x = 29,864,377.72

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.