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Finding the Fourth Proportional to 84,348.76, 126,523.16 and 22,018.72

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Solution

The fourth proportional to 84,348.76, 126,523.16 and 22,018.72 is: 33,028.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,348.76 : 126,523.16 = 22,018.72 : x
  2. Step 2: Convert to fraction form
    84,348.76/126,523.16 = 22,018.72/x
  3. Step 3: Cross multiply
    84,348.76x = 126,523.16 × 22,018.72
  4. Step 4: Simplify right side
    84,348.76x = 2,785,878,033.56
  5. Step 5: Solve for x
    x = 2,785,878,033.56/84,348.76
  6. Step 6: Final answer
    x = 33,028.09

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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.