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Finding the Fourth Proportional to 11,336.88, 16,973.76 and 8,555.12

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Solution

The fourth proportional to 11,336.88, 16,973.76 and 8,555.12 is: 12,808.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,336.88 : 16,973.76 = 8,555.12 : x
  2. Step 2: Convert to fraction form
    11,336.88/16,973.76 = 8,555.12/x
  3. Step 3: Cross multiply
    11,336.88x = 16,973.76 × 8,555.12
  4. Step 4: Simplify right side
    11,336.88x = 145,212,553.65
  5. Step 5: Solve for x
    x = 145,212,553.65/11,336.88
  6. Step 6: Final answer
    x = 12,808.86

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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.