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Finding the Fourth Proportional to 74,425.44, 111,639.21 and 21,836.01

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Solution

The fourth proportional to 74,425.44, 111,639.21 and 21,836.01 is: 32,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,425.44 : 111,639.21 = 21,836.01 : x
  2. Step 2: Convert to fraction form
    74,425.44/111,639.21 = 21,836.01/x
  3. Step 3: Cross multiply
    74,425.44x = 111,639.21 × 21,836.01
  4. Step 4: Simplify right side
    74,425.44x = 2,437,754,905.95
  5. Step 5: Solve for x
    x = 2,437,754,905.95/74,425.44
  6. Step 6: Final answer
    x = 32,754.32

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Why These Related Problems?

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