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Finding the Fourth Proportional to 6,893.79, 9,516.74 and 4,243.47

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Solution

The fourth proportional to 6,893.79, 9,516.74 and 4,243.47 is: 5,858.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,893.79 : 9,516.74 = 4,243.47 : x
  2. Step 2: Convert to fraction form
    6,893.79/9,516.74 = 4,243.47/x
  3. Step 3: Cross multiply
    6,893.79x = 9,516.74 × 4,243.47
  4. Step 4: Simplify right side
    6,893.79x = 40,383,979.47
  5. Step 5: Solve for x
    x = 40,383,979.47/6,893.79
  6. Step 6: Final answer
    x = 5,858.02

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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.