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Finding the Fourth Proportional to 136,474.90, 204,923.55 and 74,266.90

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Solution

The fourth proportional to 136,474.90, 204,923.55 and 74,266.90 is: 111,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,474.90 : 204,923.55 = 74,266.90 : x
  2. Step 2: Convert to fraction form
    136,474.90/204,923.55 = 74,266.90/x
  3. Step 3: Cross multiply
    136,474.90x = 204,923.55 × 74,266.90
  4. Step 4: Simplify right side
    136,474.90x = 15,219,036,795.50
  5. Step 5: Solve for x
    x = 15,219,036,795.50/136,474.90
  6. Step 6: Final answer
    x = 111,515.28

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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.