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Finding the Fourth Proportional to 25,180.80, 37,738.80 and 12,004.80

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Solution

The fourth proportional to 25,180.80, 37,738.80 and 12,004.80 is: 17,991.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,180.80 : 37,738.80 = 12,004.80 : x
  2. Step 2: Convert to fraction form
    25,180.80/37,738.80 = 12,004.80/x
  3. Step 3: Cross multiply
    25,180.80x = 37,738.80 × 12,004.80
  4. Step 4: Simplify right side
    25,180.80x = 453,046,746.24
  5. Step 5: Solve for x
    x = 453,046,746.24/25,180.80
  6. Step 6: Final answer
    x = 17,991.75

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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.