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Finding the Fourth Proportional to 18,564.30, 25,610.04 and 12,201.48

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Solution

The fourth proportional to 18,564.30, 25,610.04 and 12,201.48 is: 16,832.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.30 : 25,610.04 = 12,201.48 : x
  2. Step 2: Convert to fraction form
    18,564.30/25,610.04 = 12,201.48/x
  3. Step 3: Cross multiply
    18,564.30x = 25,610.04 × 12,201.48
  4. Step 4: Simplify right side
    18,564.30x = 312,480,390.86
  5. Step 5: Solve for x
    x = 312,480,390.86/18,564.30
  6. Step 6: Final answer
    x = 16,832.33

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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.