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Finding the Fourth Proportional to 18,412.07, 25,407.97 and 11,253.97

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Solution

The fourth proportional to 18,412.07, 25,407.97 and 11,253.97 is: 15,530.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.07 : 25,407.97 = 11,253.97 : x
  2. Step 2: Convert to fraction form
    18,412.07/25,407.97 = 11,253.97/x
  3. Step 3: Cross multiply
    18,412.07x = 25,407.97 × 11,253.97
  4. Step 4: Simplify right side
    18,412.07x = 285,940,532.14
  5. Step 5: Solve for x
    x = 285,940,532.14/18,412.07
  6. Step 6: Final answer
    x = 15,530.06

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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.