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Finding the Fourth Proportional to 88,679.92, 122,378 and 48,393.68

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Solution

The fourth proportional to 88,679.92, 122,378 and 48,393.68 is: 66,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,679.92 : 122,378 = 48,393.68 : x
  2. Step 2: Convert to fraction form
    88,679.92/122,378 = 48,393.68/x
  3. Step 3: Cross multiply
    88,679.92x = 122,378 × 48,393.68
  4. Step 4: Simplify right side
    88,679.92x = 5,922,321,771.04
  5. Step 5: Solve for x
    x = 5,922,321,771.04/88,679.92
  6. Step 6: Final answer
    x = 66,783.12

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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.