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Finding the Fourth Proportional to 57,475.80, 86,216.40 and 18,034.20

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Solution

The fourth proportional to 57,475.80, 86,216.40 and 18,034.20 is: 27,052.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,475.80 : 86,216.40 = 18,034.20 : x
  2. Step 2: Convert to fraction form
    57,475.80/86,216.40 = 18,034.20/x
  3. Step 3: Cross multiply
    57,475.80x = 86,216.40 × 18,034.20
  4. Step 4: Simplify right side
    57,475.80x = 1,554,843,800.88
  5. Step 5: Solve for x
    x = 1,554,843,800.88/57,475.80
  6. Step 6: Final answer
    x = 27,052.15

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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.