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Finding the Third Proportional to 4,820 and 7,055

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Solution

The third proportional to 4,820 and 7,055 is: 10,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,820 : 7,055 = 7,055 : x
  2. Step 2: Convert to fraction form
    4,820/7,055 = 7,055/x
  3. Step 3: Cross multiply
    4,820x = 7,055 × 7,055
  4. Step 4: Simplify right side
    4,820x = 49,773,025
  5. Step 5: Solve for x
    x = 49,773,025/4,820
  6. Step 6: Final answer
    x = 10,326.35

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.