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Finding the Fourth Proportional to 18,400.24, 25,383 and 12,030.58

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Solution

The fourth proportional to 18,400.24, 25,383 and 12,030.58 is: 16,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.24 : 25,383 = 12,030.58 : x
  2. Step 2: Convert to fraction form
    18,400.24/25,383 = 12,030.58/x
  3. Step 3: Cross multiply
    18,400.24x = 25,383 × 12,030.58
  4. Step 4: Simplify right side
    18,400.24x = 305,372,212.14
  5. Step 5: Solve for x
    x = 305,372,212.14/18,400.24
  6. Step 6: Final answer
    x = 16,596.10

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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.