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Finding the Third Proportional to 5,458 and 9,015

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Solution

The third proportional to 5,458 and 9,015 is: 14,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458 : 9,015 = 9,015 : x
  2. Step 2: Convert to fraction form
    5,458/9,015 = 9,015/x
  3. Step 3: Cross multiply
    5,458x = 9,015 × 9,015
  4. Step 4: Simplify right side
    5,458x = 81,270,225
  5. Step 5: Solve for x
    x = 81,270,225/5,458
  6. Step 6: Final answer
    x = 14,890.11

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.