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Finding the Fourth Proportional to 40,798.70, 61,198.80 and 11,216.36

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Solution

The fourth proportional to 40,798.70, 61,198.80 and 11,216.36 is: 16,824.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,798.70 : 61,198.80 = 11,216.36 : x
  2. Step 2: Convert to fraction form
    40,798.70/61,198.80 = 11,216.36/x
  3. Step 3: Cross multiply
    40,798.70x = 61,198.80 × 11,216.36
  4. Step 4: Simplify right side
    40,798.70x = 686,427,772.37
  5. Step 5: Solve for x
    x = 686,427,772.37/40,798.70
  6. Step 6: Final answer
    x = 16,824.75

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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.