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Finding the Fourth Proportional to 62,321.94, 85,976.84 and 42,171.77

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Solution

The fourth proportional to 62,321.94, 85,976.84 and 42,171.77 is: 58,178.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,321.94 : 85,976.84 = 42,171.77 : x
  2. Step 2: Convert to fraction form
    62,321.94/85,976.84 = 42,171.77/x
  3. Step 3: Cross multiply
    62,321.94x = 85,976.84 × 42,171.77
  4. Step 4: Simplify right side
    62,321.94x = 3,625,795,842.18
  5. Step 5: Solve for x
    x = 3,625,795,842.18/62,321.94
  6. Step 6: Final answer
    x = 58,178.48

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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.