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Finding the Fourth Proportional to 124,195.52, 186,188.76 and 54,021.96

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Solution

The fourth proportional to 124,195.52, 186,188.76 and 54,021.96 is: 80,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,195.52 : 186,188.76 = 54,021.96 : x
  2. Step 2: Convert to fraction form
    124,195.52/186,188.76 = 54,021.96/x
  3. Step 3: Cross multiply
    124,195.52x = 186,188.76 × 54,021.96
  4. Step 4: Simplify right side
    124,195.52x = 10,058,281,745.17
  5. Step 5: Solve for x
    x = 10,058,281,745.17/124,195.52
  6. Step 6: Final answer
    x = 80,987.48

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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.