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Finding the Fourth Proportional to 16,918.40, 25,370.04 and 5,232.80

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Solution

The fourth proportional to 16,918.40, 25,370.04 and 5,232.80 is: 7,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.40 : 25,370.04 = 5,232.80 : x
  2. Step 2: Convert to fraction form
    16,918.40/25,370.04 = 5,232.80/x
  3. Step 3: Cross multiply
    16,918.40x = 25,370.04 × 5,232.80
  4. Step 4: Simplify right side
    16,918.40x = 132,756,345.31
  5. Step 5: Solve for x
    x = 132,756,345.31/16,918.40
  6. Step 6: Final answer
    x = 7,846.86

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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.