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Finding the Fourth Proportional to 18,196.92, 25,110 and 11,130.48

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Solution

The fourth proportional to 18,196.92, 25,110 and 11,130.48 is: 15,358.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,196.92 : 25,110 = 11,130.48 : x
  2. Step 2: Convert to fraction form
    18,196.92/25,110 = 11,130.48/x
  3. Step 3: Cross multiply
    18,196.92x = 25,110 × 11,130.48
  4. Step 4: Simplify right side
    18,196.92x = 279,486,352.80
  5. Step 5: Solve for x
    x = 279,486,352.80/18,196.92
  6. Step 6: Final answer
    x = 15,358.99

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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.