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Finding the Fourth Proportional to 57,759.50, 86,779.28 and 54,573.28

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Solution

The fourth proportional to 57,759.50, 86,779.28 and 54,573.28 is: 81,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,759.50 : 86,779.28 = 54,573.28 : x
  2. Step 2: Convert to fraction form
    57,759.50/86,779.28 = 54,573.28/x
  3. Step 3: Cross multiply
    57,759.50x = 86,779.28 × 54,573.28
  4. Step 4: Simplify right side
    57,759.50x = 4,735,829,865.12
  5. Step 5: Solve for x
    x = 4,735,829,865.12/57,759.50
  6. Step 6: Final answer
    x = 81,992.22

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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.