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Finding the Fourth Proportional to 18,603.30, 25,671.81 and 11,049.43

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Solution

The fourth proportional to 18,603.30, 25,671.81 and 11,049.43 is: 15,247.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.30 : 25,671.81 = 11,049.43 : x
  2. Step 2: Convert to fraction form
    18,603.30/25,671.81 = 11,049.43/x
  3. Step 3: Cross multiply
    18,603.30x = 25,671.81 × 11,049.43
  4. Step 4: Simplify right side
    18,603.30x = 283,658,753.58
  5. Step 5: Solve for x
    x = 283,658,753.58/18,603.30
  6. Step 6: Final answer
    x = 15,247.77

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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.