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Finding the Fourth Proportional to 11,800.80, 16,282.16 and 7,604

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Solution

The fourth proportional to 11,800.80, 16,282.16 and 7,604 is: 10,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.80 : 16,282.16 = 7,604 : x
  2. Step 2: Convert to fraction form
    11,800.80/16,282.16 = 7,604/x
  3. Step 3: Cross multiply
    11,800.80x = 16,282.16 × 7,604
  4. Step 4: Simplify right side
    11,800.80x = 123,809,544.64
  5. Step 5: Solve for x
    x = 123,809,544.64/11,800.80
  6. Step 6: Final answer
    x = 10,491.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.