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Finding the Fourth Proportional to 118,732.92, 163,849.24 and 65,016.96

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Solution

The fourth proportional to 118,732.92, 163,849.24 and 65,016.96 is: 89,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,732.92 : 163,849.24 = 65,016.96 : x
  2. Step 2: Convert to fraction form
    118,732.92/163,849.24 = 65,016.96/x
  3. Step 3: Cross multiply
    118,732.92x = 163,849.24 × 65,016.96
  4. Step 4: Simplify right side
    118,732.92x = 10,652,979,483.11
  5. Step 5: Solve for x
    x = 10,652,979,483.11/118,732.92
  6. Step 6: Final answer
    x = 89,722.21

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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.