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Finding the Fourth Proportional to 14,525.81, 21,789.02 and 4,137.56

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Solution

The fourth proportional to 14,525.81, 21,789.02 and 4,137.56 is: 6,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,525.81 : 21,789.02 = 4,137.56 : x
  2. Step 2: Convert to fraction form
    14,525.81/21,789.02 = 4,137.56/x
  3. Step 3: Cross multiply
    14,525.81x = 21,789.02 × 4,137.56
  4. Step 4: Simplify right side
    14,525.81x = 90,153,442.41
  5. Step 5: Solve for x
    x = 90,153,442.41/14,525.81
  6. Step 6: Final answer
    x = 6,206.43

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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.