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Finding the Third Proportional to 28,713.50 and 63,085

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Solution

The third proportional to 28,713.50 and 63,085 is: 138,600.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.50 : 63,085 = 63,085 : x
  2. Step 2: Convert to fraction form
    28,713.50/63,085 = 63,085/x
  3. Step 3: Cross multiply
    28,713.50x = 63,085 × 63,085
  4. Step 4: Simplify right side
    28,713.50x = 3,979,717,225
  5. Step 5: Solve for x
    x = 3,979,717,225/28,713.50
  6. Step 6: Final answer
    x = 138,600.91

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.