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Finding the Fourth Proportional to 18,092.45, 24,976.13 and 12,128.01

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Solution

The fourth proportional to 18,092.45, 24,976.13 and 12,128.01 is: 16,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,092.45 : 24,976.13 = 12,128.01 : x
  2. Step 2: Convert to fraction form
    18,092.45/24,976.13 = 12,128.01/x
  3. Step 3: Cross multiply
    18,092.45x = 24,976.13 × 12,128.01
  4. Step 4: Simplify right side
    18,092.45x = 302,910,693.76
  5. Step 5: Solve for x
    x = 302,910,693.76/18,092.45
  6. Step 6: Final answer
    x = 16,742.39

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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.