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Finding the Fourth Proportional to 416,063.20, 624,094.80 and 206,111.20

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Solution

The fourth proportional to 416,063.20, 624,094.80 and 206,111.20 is: 309,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,063.20 : 624,094.80 = 206,111.20 : x
  2. Step 2: Convert to fraction form
    416,063.20/624,094.80 = 206,111.20/x
  3. Step 3: Cross multiply
    416,063.20x = 624,094.80 × 206,111.20
  4. Step 4: Simplify right side
    416,063.20x = 128,632,928,141.76
  5. Step 5: Solve for x
    x = 128,632,928,141.76/416,063.20
  6. Step 6: Final answer
    x = 309,166.80

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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.