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Finding the Fourth Proportional to 124,626.79, 171,978.46 and 68,027.23

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Solution

The fourth proportional to 124,626.79, 171,978.46 and 68,027.23 is: 93,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,626.79 : 171,978.46 = 68,027.23 : x
  2. Step 2: Convert to fraction form
    124,626.79/171,978.46 = 68,027.23/x
  3. Step 3: Cross multiply
    124,626.79x = 171,978.46 × 68,027.23
  4. Step 4: Simplify right side
    124,626.79x = 11,699,218,253.47
  5. Step 5: Solve for x
    x = 11,699,218,253.47/124,626.79
  6. Step 6: Final answer
    x = 93,874.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.