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Finding the Fourth Proportional to 25,239.50, 37,864.12 and 11,388.50

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Solution

The fourth proportional to 25,239.50, 37,864.12 and 11,388.50 is: 17,084.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,239.50 : 37,864.12 = 11,388.50 : x
  2. Step 2: Convert to fraction form
    25,239.50/37,864.12 = 11,388.50/x
  3. Step 3: Cross multiply
    25,239.50x = 37,864.12 × 11,388.50
  4. Step 4: Simplify right side
    25,239.50x = 431,215,530.62
  5. Step 5: Solve for x
    x = 431,215,530.62/25,239.50
  6. Step 6: Final answer
    x = 17,084.95

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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.