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Finding the Fourth Proportional to 118,616.40, 177,924.60 and 48,479.31

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Solution

The fourth proportional to 118,616.40, 177,924.60 and 48,479.31 is: 72,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,616.40 : 177,924.60 = 48,479.31 : x
  2. Step 2: Convert to fraction form
    118,616.40/177,924.60 = 48,479.31/x
  3. Step 3: Cross multiply
    118,616.40x = 177,924.60 × 48,479.31
  4. Step 4: Simplify right side
    118,616.40x = 8,625,661,840.03
  5. Step 5: Solve for x
    x = 8,625,661,840.03/118,616.40
  6. Step 6: Final answer
    x = 72,718.97

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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.