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Finding the Fourth Proportional to 18,188.88, 24,991.86 and 14,456.40

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Solution

The fourth proportional to 18,188.88, 24,991.86 and 14,456.40 is: 19,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.88 : 24,991.86 = 14,456.40 : x
  2. Step 2: Convert to fraction form
    18,188.88/24,991.86 = 14,456.40/x
  3. Step 3: Cross multiply
    18,188.88x = 24,991.86 × 14,456.40
  4. Step 4: Simplify right side
    18,188.88x = 361,292,324.90
  5. Step 5: Solve for x
    x = 361,292,324.90/18,188.88
  6. Step 6: Final answer
    x = 19,863.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.