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Finding the Fourth Proportional to 18,305.86, 25,262.49 and 11,228.10

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Solution

The fourth proportional to 18,305.86, 25,262.49 and 11,228.10 is: 15,495.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.86 : 25,262.49 = 11,228.10 : x
  2. Step 2: Convert to fraction form
    18,305.86/25,262.49 = 11,228.10/x
  3. Step 3: Cross multiply
    18,305.86x = 25,262.49 × 11,228.10
  4. Step 4: Simplify right side
    18,305.86x = 283,649,763.97
  5. Step 5: Solve for x
    x = 283,649,763.97/18,305.86
  6. Step 6: Final answer
    x = 15,495.03

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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.