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Finding the Fourth Proportional to 17,129.60, 25,636.80 and 17,129.60

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Solution

The fourth proportional to 17,129.60, 25,636.80 and 17,129.60 is: 25,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.60 : 25,636.80 = 17,129.60 : x
  2. Step 2: Convert to fraction form
    17,129.60/25,636.80 = 17,129.60/x
  3. Step 3: Cross multiply
    17,129.60x = 25,636.80 × 17,129.60
  4. Step 4: Simplify right side
    17,129.60x = 439,148,129.28
  5. Step 5: Solve for x
    x = 439,148,129.28/17,129.60
  6. Step 6: Final answer
    x = 25,636.80

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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.