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Finding the Third Proportional to 5,672 and 8,916

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Solution

The third proportional to 5,672 and 8,916 is: 14,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672 : 8,916 = 8,916 : x
  2. Step 2: Convert to fraction form
    5,672/8,916 = 8,916/x
  3. Step 3: Cross multiply
    5,672x = 8,916 × 8,916
  4. Step 4: Simplify right side
    5,672x = 79,495,056
  5. Step 5: Solve for x
    x = 79,495,056/5,672
  6. Step 6: Final answer
    x = 14,015.35

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.