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Finding the Fourth Proportional to 9,893.62, 13,652.80 and 5,912.38

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Solution

The fourth proportional to 9,893.62, 13,652.80 and 5,912.38 is: 8,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,893.62 : 13,652.80 = 5,912.38 : x
  2. Step 2: Convert to fraction form
    9,893.62/13,652.80 = 5,912.38/x
  3. Step 3: Cross multiply
    9,893.62x = 13,652.80 × 5,912.38
  4. Step 4: Simplify right side
    9,893.62x = 80,720,541.66
  5. Step 5: Solve for x
    x = 80,720,541.66/9,893.62
  6. Step 6: Final answer
    x = 8,158.85

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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.