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Finding the Fourth Proportional to 33,687.86, 50,531.96 and 8,726.16

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Solution

The fourth proportional to 33,687.86, 50,531.96 and 8,726.16 is: 13,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,687.86 : 50,531.96 = 8,726.16 : x
  2. Step 2: Convert to fraction form
    33,687.86/50,531.96 = 8,726.16/x
  3. Step 3: Cross multiply
    33,687.86x = 50,531.96 × 8,726.16
  4. Step 4: Simplify right side
    33,687.86x = 440,949,968.07
  5. Step 5: Solve for x
    x = 440,949,968.07/33,687.86
  6. Step 6: Final answer
    x = 13,089.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.