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Finding the Fourth Proportional to 57,798.44, 86,700.66 and 18,358.64

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Solution

The fourth proportional to 57,798.44, 86,700.66 and 18,358.64 is: 27,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.44 : 86,700.66 = 18,358.64 : x
  2. Step 2: Convert to fraction form
    57,798.44/86,700.66 = 18,358.64/x
  3. Step 3: Cross multiply
    57,798.44x = 86,700.66 × 18,358.64
  4. Step 4: Simplify right side
    57,798.44x = 1,591,706,204.70
  5. Step 5: Solve for x
    x = 1,591,706,204.70/57,798.44
  6. Step 6: Final answer
    x = 27,538.91

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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.