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Finding the Fourth Proportional to 25,917.60, 38,811.60 and 17,104.80

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Solution

The fourth proportional to 25,917.60, 38,811.60 and 17,104.80 is: 25,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,917.60 : 38,811.60 = 17,104.80 : x
  2. Step 2: Convert to fraction form
    25,917.60/38,811.60 = 17,104.80/x
  3. Step 3: Cross multiply
    25,917.60x = 38,811.60 × 17,104.80
  4. Step 4: Simplify right side
    25,917.60x = 663,864,655.68
  5. Step 5: Solve for x
    x = 663,864,655.68/25,917.60
  6. Step 6: Final answer
    x = 25,614.43

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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.