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Finding the Fourth Proportional to 118,640.40, 177,960.60 and 63,344.40

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Solution

The fourth proportional to 118,640.40, 177,960.60 and 63,344.40 is: 95,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,640.40 : 177,960.60 = 63,344.40 : x
  2. Step 2: Convert to fraction form
    118,640.40/177,960.60 = 63,344.40/x
  3. Step 3: Cross multiply
    118,640.40x = 177,960.60 × 63,344.40
  4. Step 4: Simplify right side
    118,640.40x = 11,272,807,430.64
  5. Step 5: Solve for x
    x = 11,272,807,430.64/118,640.40
  6. Step 6: Final answer
    x = 95,016.60

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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.