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Finding the Fourth Proportional to 13,614.91, 18,783.90 and 8,506.96

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Solution

The fourth proportional to 13,614.91, 18,783.90 and 8,506.96 is: 11,736.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.91 : 18,783.90 = 8,506.96 : x
  2. Step 2: Convert to fraction form
    13,614.91/18,783.90 = 8,506.96/x
  3. Step 3: Cross multiply
    13,614.91x = 18,783.90 × 8,506.96
  4. Step 4: Simplify right side
    13,614.91x = 159,793,885.94
  5. Step 5: Solve for x
    x = 159,793,885.94/13,614.91
  6. Step 6: Final answer
    x = 11,736.68

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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.