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Finding the Third Proportional to 11,877.50 and 25,415

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Solution

The third proportional to 11,877.50 and 25,415 is: 54,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.50 : 25,415 = 25,415 : x
  2. Step 2: Convert to fraction form
    11,877.50/25,415 = 25,415/x
  3. Step 3: Cross multiply
    11,877.50x = 25,415 × 25,415
  4. Step 4: Simplify right side
    11,877.50x = 645,922,225
  5. Step 5: Solve for x
    x = 645,922,225/11,877.50
  6. Step 6: Final answer
    x = 54,382.00

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.