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Finding the Fourth Proportional to 16,909.60, 25,371.60 and 10,674.40

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Solution

The fourth proportional to 16,909.60, 25,371.60 and 10,674.40 is: 16,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,909.60 : 25,371.60 = 10,674.40 : x
  2. Step 2: Convert to fraction form
    16,909.60/25,371.60 = 10,674.40/x
  3. Step 3: Cross multiply
    16,909.60x = 25,371.60 × 10,674.40
  4. Step 4: Simplify right side
    16,909.60x = 270,826,607.04
  5. Step 5: Solve for x
    x = 270,826,607.04/16,909.60
  6. Step 6: Final answer
    x = 16,016.15

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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.