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Finding the Fourth Proportional to 57,801.56, 86,705.34 and 18,361.76

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Solution

The fourth proportional to 57,801.56, 86,705.34 and 18,361.76 is: 27,543.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.56 : 86,705.34 = 18,361.76 : x
  2. Step 2: Convert to fraction form
    57,801.56/86,705.34 = 18,361.76/x
  3. Step 3: Cross multiply
    57,801.56x = 86,705.34 × 18,361.76
  4. Step 4: Simplify right side
    57,801.56x = 1,592,062,643.80
  5. Step 5: Solve for x
    x = 1,592,062,643.80/57,801.56
  6. Step 6: Final answer
    x = 27,543.59

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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.