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Finding the Third Proportional to 3,147.75 and 4,630.50

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Solution

The third proportional to 3,147.75 and 4,630.50 is: 6,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.75 : 4,630.50 = 4,630.50 : x
  2. Step 2: Convert to fraction form
    3,147.75/4,630.50 = 4,630.50/x
  3. Step 3: Cross multiply
    3,147.75x = 4,630.50 × 4,630.50
  4. Step 4: Simplify right side
    3,147.75x = 21,441,530.25
  5. Step 5: Solve for x
    x = 21,441,530.25/3,147.75
  6. Step 6: Final answer
    x = 6,811.70

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.