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Finding the Fourth Proportional to 118,757.92, 163,887.78 and 65,041.96

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Solution

The fourth proportional to 118,757.92, 163,887.78 and 65,041.96 is: 89,758.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,757.92 : 163,887.78 = 65,041.96 : x
  2. Step 2: Convert to fraction form
    118,757.92/163,887.78 = 65,041.96/x
  3. Step 3: Cross multiply
    118,757.92x = 163,887.78 × 65,041.96
  4. Step 4: Simplify right side
    118,757.92x = 10,659,582,431.25
  5. Step 5: Solve for x
    x = 10,659,582,431.25/118,757.92
  6. Step 6: Final answer
    x = 89,758.92

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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.