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Finding the Fourth Proportional to 18,495.76, 25,504.08 and 11,772.79

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Solution

The fourth proportional to 18,495.76, 25,504.08 and 11,772.79 is: 16,233.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.76 : 25,504.08 = 11,772.79 : x
  2. Step 2: Convert to fraction form
    18,495.76/25,504.08 = 11,772.79/x
  3. Step 3: Cross multiply
    18,495.76x = 25,504.08 × 11,772.79
  4. Step 4: Simplify right side
    18,495.76x = 300,254,177.98
  5. Step 5: Solve for x
    x = 300,254,177.98/18,495.76
  6. Step 6: Final answer
    x = 16,233.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.