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Finding the Third Proportional to 4,518,642.38 and 9,933,978.38

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Solution

The third proportional to 4,518,642.38 and 9,933,978.38 is: 21,839,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,518,642.38 : 9,933,978.38 = 9,933,978.38 : x
  2. Step 2: Convert to fraction form
    4,518,642.38/9,933,978.38 = 9,933,978.38/x
  3. Step 3: Cross multiply
    4,518,642.38x = 9,933,978.38 × 9,933,978.38
  4. Step 4: Simplify right side
    4,518,642.38x = 98,683,926,354,967.64
  5. Step 5: Solve for x
    x = 98,683,926,354,967.64/4,518,642.38
  6. Step 6: Final answer
    x = 21,839,286.71

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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.