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Finding the Third Proportional to 14,313 and 20,920.50

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Solution

The third proportional to 14,313 and 20,920.50 is: 30,578.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,313 : 20,920.50 = 20,920.50 : x
  2. Step 2: Convert to fraction form
    14,313/20,920.50 = 20,920.50/x
  3. Step 3: Cross multiply
    14,313x = 20,920.50 × 20,920.50
  4. Step 4: Simplify right side
    14,313x = 437,667,320.25
  5. Step 5: Solve for x
    x = 437,667,320.25/14,313
  6. Step 6: Final answer
    x = 30,578.31

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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.