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Finding the Fourth Proportional to 68,555.47, 102,822.78 and 26,429.41

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Solution

The fourth proportional to 68,555.47, 102,822.78 and 26,429.41 is: 39,640.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,555.47 : 102,822.78 = 26,429.41 : x
  2. Step 2: Convert to fraction form
    68,555.47/102,822.78 = 26,429.41/x
  3. Step 3: Cross multiply
    68,555.47x = 102,822.78 × 26,429.41
  4. Step 4: Simplify right side
    68,555.47x = 2,717,544,763.70
  5. Step 5: Solve for x
    x = 2,717,544,763.70/68,555.47
  6. Step 6: Final answer
    x = 39,640.09

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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.