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Finding the Fourth Proportional to 18,602.09, 25,656.03 and 12,235.22

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Solution

The fourth proportional to 18,602.09, 25,656.03 and 12,235.22 is: 16,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.09 : 25,656.03 = 12,235.22 : x
  2. Step 2: Convert to fraction form
    18,602.09/25,656.03 = 12,235.22/x
  3. Step 3: Cross multiply
    18,602.09x = 25,656.03 × 12,235.22
  4. Step 4: Simplify right side
    18,602.09x = 313,907,043.10
  5. Step 5: Solve for x
    x = 313,907,043.10/18,602.09
  6. Step 6: Final answer
    x = 16,874.83

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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.