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Finding the Fourth Proportional to 57,758.38, 86,648.37 and 18,304.90

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Solution

The fourth proportional to 57,758.38, 86,648.37 and 18,304.90 is: 27,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,758.38 : 86,648.37 = 18,304.90 : x
  2. Step 2: Convert to fraction form
    57,758.38/86,648.37 = 18,304.90/x
  3. Step 3: Cross multiply
    57,758.38x = 86,648.37 × 18,304.90
  4. Step 4: Simplify right side
    57,758.38x = 1,586,089,748.01
  5. Step 5: Solve for x
    x = 1,586,089,748.01/57,758.38
  6. Step 6: Final answer
    x = 27,460.77

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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.