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Finding the Fourth Proportional to 17,683.12, 26,524.68 and 8,421.04

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Solution

The fourth proportional to 17,683.12, 26,524.68 and 8,421.04 is: 12,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,683.12 : 26,524.68 = 8,421.04 : x
  2. Step 2: Convert to fraction form
    17,683.12/26,524.68 = 8,421.04/x
  3. Step 3: Cross multiply
    17,683.12x = 26,524.68 × 8,421.04
  4. Step 4: Simplify right side
    17,683.12x = 223,365,391.27
  5. Step 5: Solve for x
    x = 223,365,391.27/17,683.12
  6. Step 6: Final answer
    x = 12,631.56

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Similar ratio
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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.