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Finding the Fourth Proportional to 6,475.47, 8,936.10 and 3,680.97

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Solution

The fourth proportional to 6,475.47, 8,936.10 and 3,680.97 is: 5,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,475.47 : 8,936.10 = 3,680.97 : x
  2. Step 2: Convert to fraction form
    6,475.47/8,936.10 = 3,680.97/x
  3. Step 3: Cross multiply
    6,475.47x = 8,936.10 × 3,680.97
  4. Step 4: Simplify right side
    6,475.47x = 32,893,516.02
  5. Step 5: Solve for x
    x = 32,893,516.02/6,475.47
  6. Step 6: Final answer
    x = 5,079.71

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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.