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Finding the Fourth Proportional to 56,631.46, 84,957.90 and 18,682.90

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Solution

The fourth proportional to 56,631.46, 84,957.90 and 18,682.90 is: 28,027.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,631.46 : 84,957.90 = 18,682.90 : x
  2. Step 2: Convert to fraction form
    56,631.46/84,957.90 = 18,682.90/x
  3. Step 3: Cross multiply
    56,631.46x = 84,957.90 × 18,682.90
  4. Step 4: Simplify right side
    56,631.46x = 1,587,259,949.91
  5. Step 5: Solve for x
    x = 1,587,259,949.91/56,631.46
  6. Step 6: Final answer
    x = 28,027.88

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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.