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Finding the Fourth Proportional to 33,615.80, 50,423.73 and 8,655.90

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Solution

The fourth proportional to 33,615.80, 50,423.73 and 8,655.90 is: 12,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,615.80 : 50,423.73 = 8,655.90 : x
  2. Step 2: Convert to fraction form
    33,615.80/50,423.73 = 8,655.90/x
  3. Step 3: Cross multiply
    33,615.80x = 50,423.73 × 8,655.90
  4. Step 4: Simplify right side
    33,615.80x = 436,462,764.51
  5. Step 5: Solve for x
    x = 436,462,764.51/33,615.80
  6. Step 6: Final answer
    x = 12,983.86

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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.