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Finding the Fourth Proportional to 101,245.41, 139,718.86 and 60,960.87

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Solution

The fourth proportional to 101,245.41, 139,718.86 and 60,960.87 is: 84,126.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.41 : 139,718.86 = 60,960.87 : x
  2. Step 2: Convert to fraction form
    101,245.41/139,718.86 = 60,960.87/x
  3. Step 3: Cross multiply
    101,245.41x = 139,718.86 × 60,960.87
  4. Step 4: Simplify right side
    101,245.41x = 8,517,383,108.61
  5. Step 5: Solve for x
    x = 8,517,383,108.61/101,245.41
  6. Step 6: Final answer
    x = 84,126.12

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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.