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Finding the Fourth Proportional to 118,260.80, 177,439.80 and 43,416.80

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Solution

The fourth proportional to 118,260.80, 177,439.80 and 43,416.80 is: 65,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,260.80 : 177,439.80 = 43,416.80 : x
  2. Step 2: Convert to fraction form
    118,260.80/177,439.80 = 43,416.80/x
  3. Step 3: Cross multiply
    118,260.80x = 177,439.80 × 43,416.80
  4. Step 4: Simplify right side
    118,260.80x = 7,703,868,308.64
  5. Step 5: Solve for x
    x = 7,703,868,308.64/118,260.80
  6. Step 6: Final answer
    x = 65,143.04

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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.