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Finding the Fourth Proportional to 201,445.20, 301,908.60 and 122,475.60

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Solution

The fourth proportional to 201,445.20, 301,908.60 and 122,475.60 is: 183,555.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,445.20 : 301,908.60 = 122,475.60 : x
  2. Step 2: Convert to fraction form
    201,445.20/301,908.60 = 122,475.60/x
  3. Step 3: Cross multiply
    201,445.20x = 301,908.60 × 122,475.60
  4. Step 4: Simplify right side
    201,445.20x = 36,976,436,930.16
  5. Step 5: Solve for x
    x = 36,976,436,930.16/201,445.20
  6. Step 6: Final answer
    x = 183,555.81

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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.