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Finding the Third Proportional to 18,686.25 and 28,963.41

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Solution

The third proportional to 18,686.25 and 28,963.41 is: 44,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.25 : 28,963.41 = 28,963.41 : x
  2. Step 2: Convert to fraction form
    18,686.25/28,963.41 = 28,963.41/x
  3. Step 3: Cross multiply
    18,686.25x = 28,963.41 × 28,963.41
  4. Step 4: Simplify right side
    18,686.25x = 838,878,901.60
  5. Step 5: Solve for x
    x = 838,878,901.60/18,686.25
  6. Step 6: Final answer
    x = 44,892.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.