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Finding the Third Proportional to 4,676.50 and 7,239

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Solution

The third proportional to 4,676.50 and 7,239 is: 11,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,676.50 : 7,239 = 7,239 : x
  2. Step 2: Convert to fraction form
    4,676.50/7,239 = 7,239/x
  3. Step 3: Cross multiply
    4,676.50x = 7,239 × 7,239
  4. Step 4: Simplify right side
    4,676.50x = 52,403,121
  5. Step 5: Solve for x
    x = 52,403,121/4,676.50
  6. Step 6: Final answer
    x = 11,205.63

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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.