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Finding the Fourth Proportional to 22,390.18, 33,583.92 and 8,347.48

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Solution

The fourth proportional to 22,390.18, 33,583.92 and 8,347.48 is: 12,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.18 : 33,583.92 = 8,347.48 : x
  2. Step 2: Convert to fraction form
    22,390.18/33,583.92 = 8,347.48/x
  3. Step 3: Cross multiply
    22,390.18x = 33,583.92 × 8,347.48
  4. Step 4: Simplify right side
    22,390.18x = 280,341,100.52
  5. Step 5: Solve for x
    x = 280,341,100.52/22,390.18
  6. Step 6: Final answer
    x = 12,520.72

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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.