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Finding the Third Proportional to 4,428 and 9,583.31

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Solution

The third proportional to 4,428 and 9,583.31 is: 20,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428 : 9,583.31 = 9,583.31 : x
  2. Step 2: Convert to fraction form
    4,428/9,583.31 = 9,583.31/x
  3. Step 3: Cross multiply
    4,428x = 9,583.31 × 9,583.31
  4. Step 4: Simplify right side
    4,428x = 91,839,878.47
  5. Step 5: Solve for x
    x = 91,839,878.47/4,428
  6. Step 6: Final answer
    x = 20,740.71

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.