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Finding the Third Proportional to 38,893.50 and 85,239

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Solution

The third proportional to 38,893.50 and 85,239 is: 186,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,893.50 : 85,239 = 85,239 : x
  2. Step 2: Convert to fraction form
    38,893.50/85,239 = 85,239/x
  3. Step 3: Cross multiply
    38,893.50x = 85,239 × 85,239
  4. Step 4: Simplify right side
    38,893.50x = 7,265,687,121
  5. Step 5: Solve for x
    x = 7,265,687,121/38,893.50
  6. Step 6: Final answer
    x = 186,809.80

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.