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Finding the Fourth Proportional to 18,548.25, 25,582.59 and 12,882.99

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Solution

The fourth proportional to 18,548.25, 25,582.59 and 12,882.99 is: 17,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,548.25 : 25,582.59 = 12,882.99 : x
  2. Step 2: Convert to fraction form
    18,548.25/25,582.59 = 12,882.99/x
  3. Step 3: Cross multiply
    18,548.25x = 25,582.59 × 12,882.99
  4. Step 4: Simplify right side
    18,548.25x = 329,580,251.14
  5. Step 5: Solve for x
    x = 329,580,251.14/18,548.25
  6. Step 6: Final answer
    x = 17,768.81

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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.