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Finding the Fourth Proportional to 17,332.20, 25,940.70 and 12,148.20

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Solution

The fourth proportional to 17,332.20, 25,940.70 and 12,148.20 is: 18,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,332.20 : 25,940.70 = 12,148.20 : x
  2. Step 2: Convert to fraction form
    17,332.20/25,940.70 = 12,148.20/x
  3. Step 3: Cross multiply
    17,332.20x = 25,940.70 × 12,148.20
  4. Step 4: Simplify right side
    17,332.20x = 315,132,811.74
  5. Step 5: Solve for x
    x = 315,132,811.74/17,332.20
  6. Step 6: Final answer
    x = 18,181.93

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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.