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Finding the Fourth Proportional to 16,898.90, 25,311.90 and 13,982.90

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Solution

The fourth proportional to 16,898.90, 25,311.90 and 13,982.90 is: 20,944.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,898.90 : 25,311.90 = 13,982.90 : x
  2. Step 2: Convert to fraction form
    16,898.90/25,311.90 = 13,982.90/x
  3. Step 3: Cross multiply
    16,898.90x = 25,311.90 × 13,982.90
  4. Step 4: Simplify right side
    16,898.90x = 353,933,766.51
  5. Step 5: Solve for x
    x = 353,933,766.51/16,898.90
  6. Step 6: Final answer
    x = 20,944.19

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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.