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Finding the Fourth Proportional to 18,196.98, 25,112.16 and 11,909.32

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Solution

The fourth proportional to 18,196.98, 25,112.16 and 11,909.32 is: 16,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,196.98 : 25,112.16 = 11,909.32 : x
  2. Step 2: Convert to fraction form
    18,196.98/25,112.16 = 11,909.32/x
  3. Step 3: Cross multiply
    18,196.98x = 25,112.16 × 11,909.32
  4. Step 4: Simplify right side
    18,196.98x = 299,068,749.33
  5. Step 5: Solve for x
    x = 299,068,749.33/18,196.98
  6. Step 6: Final answer
    x = 16,435.08

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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.