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Finding the Third Proportional to 5,272.88 and 7,916.63

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Solution

The third proportional to 5,272.88 and 7,916.63 is: 11,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.88 : 7,916.63 = 7,916.63 : x
  2. Step 2: Convert to fraction form
    5,272.88/7,916.63 = 7,916.63/x
  3. Step 3: Cross multiply
    5,272.88x = 7,916.63 × 7,916.63
  4. Step 4: Simplify right side
    5,272.88x = 62,672,951.39
  5. Step 5: Solve for x
    x = 62,672,951.39/5,272.88
  6. Step 6: Final answer
    x = 11,885.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.