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Finding the Fourth Proportional to 68,929.94, 95,122.94 and 38,715.72

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Solution

The fourth proportional to 68,929.94, 95,122.94 and 38,715.72 is: 53,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,929.94 : 95,122.94 = 38,715.72 : x
  2. Step 2: Convert to fraction form
    68,929.94/95,122.94 = 38,715.72/x
  3. Step 3: Cross multiply
    68,929.94x = 95,122.94 × 38,715.72
  4. Step 4: Simplify right side
    68,929.94x = 3,682,752,917.04
  5. Step 5: Solve for x
    x = 3,682,752,917.04/68,929.94
  6. Step 6: Final answer
    x = 53,427.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.