Home / 262,608.30-393,912.45-85,121.10

Finding the Fourth Proportional to 262,608.30, 393,912.45 and 85,121.10

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Solution

The fourth proportional to 262,608.30, 393,912.45 and 85,121.10 is: 127,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,608.30 : 393,912.45 = 85,121.10 : x
  2. Step 2: Convert to fraction form
    262,608.30/393,912.45 = 85,121.10/x
  3. Step 3: Cross multiply
    262,608.30x = 393,912.45 × 85,121.10
  4. Step 4: Simplify right side
    262,608.30x = 33,530,261,047.70
  5. Step 5: Solve for x
    x = 33,530,261,047.70/262,608.30
  6. Step 6: Final answer
    x = 127,681.65

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1.5x scale

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.