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Finding the Fourth Proportional to 16,914.40, 25,371.60 and 11,384.80

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Solution

The fourth proportional to 16,914.40, 25,371.60 and 11,384.80 is: 17,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,914.40 : 25,371.60 = 11,384.80 : x
  2. Step 2: Convert to fraction form
    16,914.40/25,371.60 = 11,384.80/x
  3. Step 3: Cross multiply
    16,914.40x = 25,371.60 × 11,384.80
  4. Step 4: Simplify right side
    16,914.40x = 288,850,591.68
  5. Step 5: Solve for x
    x = 288,850,591.68/16,914.40
  6. Step 6: Final answer
    x = 17,077.20

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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.