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Finding the Fourth Proportional to 22,390.72, 33,564.21 and 8,340.46

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Solution

The fourth proportional to 22,390.72, 33,564.21 and 8,340.46 is: 12,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.72 : 33,564.21 = 8,340.46 : x
  2. Step 2: Convert to fraction form
    22,390.72/33,564.21 = 8,340.46/x
  3. Step 3: Cross multiply
    22,390.72x = 33,564.21 × 8,340.46
  4. Step 4: Simplify right side
    22,390.72x = 279,940,950.94
  5. Step 5: Solve for x
    x = 279,940,950.94/22,390.72
  6. Step 6: Final answer
    x = 12,502.54

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1.5x scale

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.