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Finding the Fourth Proportional to 118,173.92, 177,302.88 and 72,633.32

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Solution

The fourth proportional to 118,173.92, 177,302.88 and 72,633.32 is: 108,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,173.92 : 177,302.88 = 72,633.32 : x
  2. Step 2: Convert to fraction form
    118,173.92/177,302.88 = 72,633.32/x
  3. Step 3: Cross multiply
    118,173.92x = 177,302.88 × 72,633.32
  4. Step 4: Simplify right side
    118,173.92x = 12,878,096,819.96
  5. Step 5: Solve for x
    x = 12,878,096,819.96/118,173.92
  6. Step 6: Final answer
    x = 108,975.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.