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Finding the Fourth Proportional to 74,520, 111,797.28 and 25,272

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Solution

The fourth proportional to 74,520, 111,797.28 and 25,272 is: 37,913.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520 : 111,797.28 = 25,272 : x
  2. Step 2: Convert to fraction form
    74,520/111,797.28 = 25,272/x
  3. Step 3: Cross multiply
    74,520x = 111,797.28 × 25,272
  4. Step 4: Simplify right side
    74,520x = 2,825,340,860.16
  5. Step 5: Solve for x
    x = 2,825,340,860.16/74,520
  6. Step 6: Final answer
    x = 37,913.86

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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.