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Finding the Third Proportional to 19,428 and 25,864

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Solution

The third proportional to 19,428 and 25,864 is: 34,432.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428 : 25,864 = 25,864 : x
  2. Step 2: Convert to fraction form
    19,428/25,864 = 25,864/x
  3. Step 3: Cross multiply
    19,428x = 25,864 × 25,864
  4. Step 4: Simplify right side
    19,428x = 668,946,496
  5. Step 5: Solve for x
    x = 668,946,496/19,428
  6. Step 6: Final answer
    x = 34,432.08

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.