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Finding the Fourth Proportional to 17,145.76, 25,732.32 and 6,764.80

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Solution

The fourth proportional to 17,145.76, 25,732.32 and 6,764.80 is: 10,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,145.76 : 25,732.32 = 6,764.80 : x
  2. Step 2: Convert to fraction form
    17,145.76/25,732.32 = 6,764.80/x
  3. Step 3: Cross multiply
    17,145.76x = 25,732.32 × 6,764.80
  4. Step 4: Simplify right side
    17,145.76x = 174,073,998.34
  5. Step 5: Solve for x
    x = 174,073,998.34/17,145.76
  6. Step 6: Final answer
    x = 10,152.60

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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.