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Finding the Fourth Proportional to 39,896.48, 59,838.23 and 18,836.48

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Solution

The fourth proportional to 39,896.48, 59,838.23 and 18,836.48 is: 28,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.48 : 59,838.23 = 18,836.48 : x
  2. Step 2: Convert to fraction form
    39,896.48/59,838.23 = 18,836.48/x
  3. Step 3: Cross multiply
    39,896.48x = 59,838.23 × 18,836.48
  4. Step 4: Simplify right side
    39,896.48x = 1,127,141,819.32
  5. Step 5: Solve for x
    x = 1,127,141,819.32/39,896.48
  6. Step 6: Final answer
    x = 28,251.66

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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.