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Finding the Fourth Proportional to 11,793.96, 16,275.96 and 6,489

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Solution

The fourth proportional to 11,793.96, 16,275.96 and 6,489 is: 8,954.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,793.96 : 16,275.96 = 6,489 : x
  2. Step 2: Convert to fraction form
    11,793.96/16,275.96 = 6,489/x
  3. Step 3: Cross multiply
    11,793.96x = 16,275.96 × 6,489
  4. Step 4: Simplify right side
    11,793.96x = 105,614,704.44
  5. Step 5: Solve for x
    x = 105,614,704.44/11,793.96
  6. Step 6: Final answer
    x = 8,954.98

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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.