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Finding the Fourth Proportional to 18,106.14, 24,963.12 and 11,721.42

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Solution

The fourth proportional to 18,106.14, 24,963.12 and 11,721.42 is: 16,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,106.14 : 24,963.12 = 11,721.42 : x
  2. Step 2: Convert to fraction form
    18,106.14/24,963.12 = 11,721.42/x
  3. Step 3: Cross multiply
    18,106.14x = 24,963.12 × 11,721.42
  4. Step 4: Simplify right side
    18,106.14x = 292,603,214.03
  5. Step 5: Solve for x
    x = 292,603,214.03/18,106.14
  6. Step 6: Final answer
    x = 16,160.44

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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.