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Finding the Fourth Proportional to 18,798.32, 25,939.20 and 11,241.89

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Solution

The fourth proportional to 18,798.32, 25,939.20 and 11,241.89 is: 15,512.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.32 : 25,939.20 = 11,241.89 : x
  2. Step 2: Convert to fraction form
    18,798.32/25,939.20 = 11,241.89/x
  3. Step 3: Cross multiply
    18,798.32x = 25,939.20 × 11,241.89
  4. Step 4: Simplify right side
    18,798.32x = 291,605,503.39
  5. Step 5: Solve for x
    x = 291,605,503.39/18,798.32
  6. Step 6: Final answer
    x = 15,512.32

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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.