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Finding the Third Proportional to 4,482 and 7,185

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Solution

The third proportional to 4,482 and 7,185 is: 11,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,482 : 7,185 = 7,185 : x
  2. Step 2: Convert to fraction form
    4,482/7,185 = 7,185/x
  3. Step 3: Cross multiply
    4,482x = 7,185 × 7,185
  4. Step 4: Simplify right side
    4,482x = 51,624,225
  5. Step 5: Solve for x
    x = 51,624,225/4,482
  6. Step 6: Final answer
    x = 11,518.12

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.