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Finding the Fourth Proportional to 124,593.96, 171,939.06 and 68,005.20

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Solution

The fourth proportional to 124,593.96, 171,939.06 and 68,005.20 is: 93,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,593.96 : 171,939.06 = 68,005.20 : x
  2. Step 2: Convert to fraction form
    124,593.96/171,939.06 = 68,005.20/x
  3. Step 3: Cross multiply
    124,593.96x = 171,939.06 × 68,005.20
  4. Step 4: Simplify right side
    124,593.96x = 11,692,750,163.11
  5. Step 5: Solve for x
    x = 11,692,750,163.11/124,593.96
  6. Step 6: Final answer
    x = 93,846.85

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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.