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Finding the Fourth Proportional to 74,329, 111,493.50 and 25,081

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Solution

The fourth proportional to 74,329, 111,493.50 and 25,081 is: 37,621.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,329 : 111,493.50 = 25,081 : x
  2. Step 2: Convert to fraction form
    74,329/111,493.50 = 25,081/x
  3. Step 3: Cross multiply
    74,329x = 111,493.50 × 25,081
  4. Step 4: Simplify right side
    74,329x = 2,796,368,473.50
  5. Step 5: Solve for x
    x = 2,796,368,473.50/74,329
  6. Step 6: Final answer
    x = 37,621.50

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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.