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Finding the Fourth Proportional to 18,208.80, 25,132.02 and 12,237.01

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Solution

The fourth proportional to 18,208.80, 25,132.02 and 12,237.01 is: 16,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,208.80 : 25,132.02 = 12,237.01 : x
  2. Step 2: Convert to fraction form
    18,208.80/25,132.02 = 12,237.01/x
  3. Step 3: Cross multiply
    18,208.80x = 25,132.02 × 12,237.01
  4. Step 4: Simplify right side
    18,208.80x = 307,540,766.68
  5. Step 5: Solve for x
    x = 307,540,766.68/18,208.80
  6. Step 6: Final answer
    x = 16,889.68

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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.