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Finding the Third Proportional to 25,431 and 39,344

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Solution

The third proportional to 25,431 and 39,344 is: 60,868.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,431 : 39,344 = 39,344 : x
  2. Step 2: Convert to fraction form
    25,431/39,344 = 39,344/x
  3. Step 3: Cross multiply
    25,431x = 39,344 × 39,344
  4. Step 4: Simplify right side
    25,431x = 1,547,950,336
  5. Step 5: Solve for x
    x = 1,547,950,336/25,431
  6. Step 6: Final answer
    x = 60,868.64

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.