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Finding the Fourth Proportional to 127,813.88, 191,745.45 and 57,693.26

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Solution

The fourth proportional to 127,813.88, 191,745.45 and 57,693.26 is: 86,551.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,813.88 : 191,745.45 = 57,693.26 : x
  2. Step 2: Convert to fraction form
    127,813.88/191,745.45 = 57,693.26/x
  3. Step 3: Cross multiply
    127,813.88x = 191,745.45 × 57,693.26
  4. Step 4: Simplify right side
    127,813.88x = 11,062,419,141.94
  5. Step 5: Solve for x
    x = 11,062,419,141.94/127,813.88
  6. Step 6: Final answer
    x = 86,551.00

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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.