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Finding the Fourth Proportional to 416,680.50, 625,126.59 and 121,192.50

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Solution

The fourth proportional to 416,680.50, 625,126.59 and 121,192.50 is: 181,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,680.50 : 625,126.59 = 121,192.50 : x
  2. Step 2: Convert to fraction form
    416,680.50/625,126.59 = 121,192.50/x
  3. Step 3: Cross multiply
    416,680.50x = 625,126.59 × 121,192.50
  4. Step 4: Simplify right side
    416,680.50x = 75,760,654,258.58
  5. Step 5: Solve for x
    x = 75,760,654,258.58/416,680.50
  6. Step 6: Final answer
    x = 181,819.53

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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.