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Finding the Fourth Proportional to 7,908.69, 10,915.83 and 4,553.43

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Solution

The fourth proportional to 7,908.69, 10,915.83 and 4,553.43 is: 6,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.69 : 10,915.83 = 4,553.43 : x
  2. Step 2: Convert to fraction form
    7,908.69/10,915.83 = 4,553.43/x
  3. Step 3: Cross multiply
    7,908.69x = 10,915.83 × 4,553.43
  4. Step 4: Simplify right side
    7,908.69x = 49,704,467.80
  5. Step 5: Solve for x
    x = 49,704,467.80/7,908.69
  6. Step 6: Final answer
    x = 6,284.79

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1.5x scale

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.