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Finding the Fourth Proportional to 68,321.72, 94,281.06 and 50,410.28

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Solution

The fourth proportional to 68,321.72, 94,281.06 and 50,410.28 is: 69,564.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,321.72 : 94,281.06 = 50,410.28 : x
  2. Step 2: Convert to fraction form
    68,321.72/94,281.06 = 50,410.28/x
  3. Step 3: Cross multiply
    68,321.72x = 94,281.06 × 50,410.28
  4. Step 4: Simplify right side
    68,321.72x = 4,752,734,633.30
  5. Step 5: Solve for x
    x = 4,752,734,633.30/68,321.72
  6. Step 6: Final answer
    x = 69,564.04

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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.