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Finding the Fourth Proportional to 5,979.57, 8,959.63 and 3,516.63

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Solution

The fourth proportional to 5,979.57, 8,959.63 and 3,516.63 is: 5,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.57 : 8,959.63 = 3,516.63 : x
  2. Step 2: Convert to fraction form
    5,979.57/8,959.63 = 3,516.63/x
  3. Step 3: Cross multiply
    5,979.57x = 8,959.63 × 3,516.63
  4. Step 4: Simplify right side
    5,979.57x = 31,507,703.65
  5. Step 5: Solve for x
    x = 31,507,703.65/5,979.57
  6. Step 6: Final answer
    x = 5,269.23

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1.5x scale

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.