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Finding the Third Proportional to 4,720 and 12,104

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Solution

The third proportional to 4,720 and 12,104 is: 31,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720 : 12,104 = 12,104 : x
  2. Step 2: Convert to fraction form
    4,720/12,104 = 12,104/x
  3. Step 3: Cross multiply
    4,720x = 12,104 × 12,104
  4. Step 4: Simplify right side
    4,720x = 146,506,816
  5. Step 5: Solve for x
    x = 146,506,816/4,720
  6. Step 6: Final answer
    x = 31,039.58

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.