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Finding the Third Proportional to 19,942 and 29,047

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Solution

The third proportional to 19,942 and 29,047 is: 42,309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942 : 29,047 = 29,047 : x
  2. Step 2: Convert to fraction form
    19,942/29,047 = 29,047/x
  3. Step 3: Cross multiply
    19,942x = 29,047 × 29,047
  4. Step 4: Simplify right side
    19,942x = 843,728,209
  5. Step 5: Solve for x
    x = 843,728,209/19,942
  6. Step 6: Final answer
    x = 42,309.11

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.