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Finding the Fourth Proportional to 7,168.81, 9,893.87 and 4,025

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Solution

The fourth proportional to 7,168.81, 9,893.87 and 4,025 is: 5,555.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.81 : 9,893.87 = 4,025 : x
  2. Step 2: Convert to fraction form
    7,168.81/9,893.87 = 4,025/x
  3. Step 3: Cross multiply
    7,168.81x = 9,893.87 × 4,025
  4. Step 4: Simplify right side
    7,168.81x = 39,822,826.75
  5. Step 5: Solve for x
    x = 39,822,826.75/7,168.81
  6. Step 6: Final answer
    x = 5,555.01

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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.