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Finding the Fourth Proportional to 13,192.88, 18,200.70 and 8,654.31

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Solution

The fourth proportional to 13,192.88, 18,200.70 and 8,654.31 is: 11,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.88 : 18,200.70 = 8,654.31 : x
  2. Step 2: Convert to fraction form
    13,192.88/18,200.70 = 8,654.31/x
  3. Step 3: Cross multiply
    13,192.88x = 18,200.70 × 8,654.31
  4. Step 4: Simplify right side
    13,192.88x = 157,514,500.02
  5. Step 5: Solve for x
    x = 157,514,500.02/13,192.88
  6. Step 6: Final answer
    x = 11,939.36

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Similar ratio
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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.