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Finding the Fourth Proportional to 5,242.50, 7,863.78 and 1,594.50

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Solution

The fourth proportional to 5,242.50, 7,863.78 and 1,594.50 is: 2,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.50 : 7,863.78 = 1,594.50 : x
  2. Step 2: Convert to fraction form
    5,242.50/7,863.78 = 1,594.50/x
  3. Step 3: Cross multiply
    5,242.50x = 7,863.78 × 1,594.50
  4. Step 4: Simplify right side
    5,242.50x = 12,538,797.21
  5. Step 5: Solve for x
    x = 12,538,797.21/5,242.50
  6. Step 6: Final answer
    x = 2,391.76

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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.