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Finding the Third Proportional to 11,903.20 and 25,389.70

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Solution

The third proportional to 11,903.20 and 25,389.70 is: 54,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.20 : 25,389.70 = 25,389.70 : x
  2. Step 2: Convert to fraction form
    11,903.20/25,389.70 = 25,389.70/x
  3. Step 3: Cross multiply
    11,903.20x = 25,389.70 × 25,389.70
  4. Step 4: Simplify right side
    11,903.20x = 644,637,024.78
  5. Step 5: Solve for x
    x = 644,637,024.78/11,903.20
  6. Step 6: Final answer
    x = 54,156.60

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.