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Finding the Fourth Proportional to 55,863.80, 83,787.60 and 16,416.80

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Solution

The fourth proportional to 55,863.80, 83,787.60 and 16,416.80 is: 24,622.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,863.80 : 83,787.60 = 16,416.80 : x
  2. Step 2: Convert to fraction form
    55,863.80/83,787.60 = 16,416.80/x
  3. Step 3: Cross multiply
    55,863.80x = 83,787.60 × 16,416.80
  4. Step 4: Simplify right side
    55,863.80x = 1,375,524,271.68
  5. Step 5: Solve for x
    x = 1,375,524,271.68/55,863.80
  6. Step 6: Final answer
    x = 24,622.82

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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.