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Finding the Fourth Proportional to 17,131.68, 25,645.68 and 15,835.68

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Solution

The fourth proportional to 17,131.68, 25,645.68 and 15,835.68 is: 23,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,131.68 : 25,645.68 = 15,835.68 : x
  2. Step 2: Convert to fraction form
    17,131.68/25,645.68 = 15,835.68/x
  3. Step 3: Cross multiply
    17,131.68x = 25,645.68 × 15,835.68
  4. Step 4: Simplify right side
    17,131.68x = 406,116,781.86
  5. Step 5: Solve for x
    x = 406,116,781.86/17,131.68
  6. Step 6: Final answer
    x = 23,705.60

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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.