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Finding the Third Proportional to 14,563.13 and 21,138.19

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Solution

The third proportional to 14,563.13 and 21,138.19 is: 30,681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,563.13 : 21,138.19 = 21,138.19 : x
  2. Step 2: Convert to fraction form
    14,563.13/21,138.19 = 21,138.19/x
  3. Step 3: Cross multiply
    14,563.13x = 21,138.19 × 21,138.19
  4. Step 4: Simplify right side
    14,563.13x = 446,822,970.79
  5. Step 5: Solve for x
    x = 446,822,970.79/14,563.13
  6. Step 6: Final answer
    x = 30,681.81

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.