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Finding the Fourth Proportional to 17,122.60, 25,683.90 and 11,217.70

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Solution

The fourth proportional to 17,122.60, 25,683.90 and 11,217.70 is: 16,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,122.60 : 25,683.90 = 11,217.70 : x
  2. Step 2: Convert to fraction form
    17,122.60/25,683.90 = 11,217.70/x
  3. Step 3: Cross multiply
    17,122.60x = 25,683.90 × 11,217.70
  4. Step 4: Simplify right side
    17,122.60x = 288,114,285.03
  5. Step 5: Solve for x
    x = 288,114,285.03/17,122.60
  6. Step 6: Final answer
    x = 16,826.55

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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.