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Finding the Third Proportional to 4,242.75 and 9,322.13

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Solution

The third proportional to 4,242.75 and 9,322.13 is: 20,482.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242.75 : 9,322.13 = 9,322.13 : x
  2. Step 2: Convert to fraction form
    4,242.75/9,322.13 = 9,322.13/x
  3. Step 3: Cross multiply
    4,242.75x = 9,322.13 × 9,322.13
  4. Step 4: Simplify right side
    4,242.75x = 86,902,014.52
  5. Step 5: Solve for x
    x = 86,902,014.52/4,242.75
  6. Step 6: Final answer
    x = 20,482.47

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.