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Finding the Third Proportional to 3,116 and 4,700

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Solution

The third proportional to 3,116 and 4,700 is: 7,089.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116 : 4,700 = 4,700 : x
  2. Step 2: Convert to fraction form
    3,116/4,700 = 4,700/x
  3. Step 3: Cross multiply
    3,116x = 4,700 × 4,700
  4. Step 4: Simplify right side
    3,116x = 22,090,000
  5. Step 5: Solve for x
    x = 22,090,000/3,116
  6. Step 6: Final answer
    x = 7,089.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.