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Finding the Third Proportional to 4,786 and 9,710

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Solution

The third proportional to 4,786 and 9,710 is: 19,699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786 : 9,710 = 9,710 : x
  2. Step 2: Convert to fraction form
    4,786/9,710 = 9,710/x
  3. Step 3: Cross multiply
    4,786x = 9,710 × 9,710
  4. Step 4: Simplify right side
    4,786x = 94,284,100
  5. Step 5: Solve for x
    x = 94,284,100/4,786
  6. Step 6: Final answer
    x = 19,699.98

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.