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Finding the Fourth Proportional to 53,642.52, 80,448.12 and 20,338.56

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Solution

The fourth proportional to 53,642.52, 80,448.12 and 20,338.56 is: 30,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,642.52 : 80,448.12 = 20,338.56 : x
  2. Step 2: Convert to fraction form
    53,642.52/80,448.12 = 20,338.56/x
  3. Step 3: Cross multiply
    53,642.52x = 80,448.12 × 20,338.56
  4. Step 4: Simplify right side
    53,642.52x = 1,636,198,915.51
  5. Step 5: Solve for x
    x = 1,636,198,915.51/53,642.52
  6. Step 6: Final answer
    x = 30,501.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.