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Finding the Fourth Proportional to 10,763.52, 16,139.52 and 4,918.56

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Solution

The fourth proportional to 10,763.52, 16,139.52 and 4,918.56 is: 7,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,763.52 : 16,139.52 = 4,918.56 : x
  2. Step 2: Convert to fraction form
    10,763.52/16,139.52 = 4,918.56/x
  3. Step 3: Cross multiply
    10,763.52x = 16,139.52 × 4,918.56
  4. Step 4: Simplify right side
    10,763.52x = 79,383,197.49
  5. Step 5: Solve for x
    x = 79,383,197.49/10,763.52
  6. Step 6: Final answer
    x = 7,375.21

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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.