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Finding the Fourth Proportional to 118,654.23, 163,743.81 and 73,321.86

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Solution

The fourth proportional to 118,654.23, 163,743.81 and 73,321.86 is: 101,184.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,654.23 : 163,743.81 = 73,321.86 : x
  2. Step 2: Convert to fraction form
    118,654.23/163,743.81 = 73,321.86/x
  3. Step 3: Cross multiply
    118,654.23x = 163,743.81 × 73,321.86
  4. Step 4: Simplify right side
    118,654.23x = 12,006,000,712.69
  5. Step 5: Solve for x
    x = 12,006,000,712.69/118,654.23
  6. Step 6: Final answer
    x = 101,184.77

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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.