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Finding the Fourth Proportional to 2,375.16, 3,563.04 and 815.46

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Solution

The fourth proportional to 2,375.16, 3,563.04 and 815.46 is: 1,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.16 : 3,563.04 = 815.46 : x
  2. Step 2: Convert to fraction form
    2,375.16/3,563.04 = 815.46/x
  3. Step 3: Cross multiply
    2,375.16x = 3,563.04 × 815.46
  4. Step 4: Simplify right side
    2,375.16x = 2,905,516.60
  5. Step 5: Solve for x
    x = 2,905,516.60/2,375.16
  6. Step 6: Final answer
    x = 1,223.29

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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.