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Finding the Fourth Proportional to 69,491.76, 104,237.64 and 16,901.28

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Solution

The fourth proportional to 69,491.76, 104,237.64 and 16,901.28 is: 25,351.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,491.76 : 104,237.64 = 16,901.28 : x
  2. Step 2: Convert to fraction form
    69,491.76/104,237.64 = 16,901.28/x
  3. Step 3: Cross multiply
    69,491.76x = 104,237.64 × 16,901.28
  4. Step 4: Simplify right side
    69,491.76x = 1,761,749,540.18
  5. Step 5: Solve for x
    x = 1,761,749,540.18/69,491.76
  6. Step 6: Final answer
    x = 25,351.92

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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.