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Finding the Fourth Proportional to 55,800.68, 83,709.21 and 18,353.78

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Solution

The fourth proportional to 55,800.68, 83,709.21 and 18,353.78 is: 27,533.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,800.68 : 83,709.21 = 18,353.78 : x
  2. Step 2: Convert to fraction form
    55,800.68/83,709.21 = 18,353.78/x
  3. Step 3: Cross multiply
    55,800.68x = 83,709.21 × 18,353.78
  4. Step 4: Simplify right side
    55,800.68x = 1,536,380,005.77
  5. Step 5: Solve for x
    x = 1,536,380,005.77/55,800.68
  6. Step 6: Final answer
    x = 27,533.36

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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.