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Finding the Fourth Proportional to 215,617.92, 323,426.88 and 57,842.88

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Solution

The fourth proportional to 215,617.92, 323,426.88 and 57,842.88 is: 86,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,617.92 : 323,426.88 = 57,842.88 : x
  2. Step 2: Convert to fraction form
    215,617.92/323,426.88 = 57,842.88/x
  3. Step 3: Cross multiply
    215,617.92x = 323,426.88 × 57,842.88
  4. Step 4: Simplify right side
    215,617.92x = 18,707,942,208.61
  5. Step 5: Solve for x
    x = 18,707,942,208.61/215,617.92
  6. Step 6: Final answer
    x = 86,764.32

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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.