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Finding the Fourth Proportional to 203,801.97, 305,604.70 and 85,441.53

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Solution

The fourth proportional to 203,801.97, 305,604.70 and 85,441.53 is: 128,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,801.97 : 305,604.70 = 85,441.53 : x
  2. Step 2: Convert to fraction form
    203,801.97/305,604.70 = 85,441.53/x
  3. Step 3: Cross multiply
    203,801.97x = 305,604.70 × 85,441.53
  4. Step 4: Simplify right side
    203,801.97x = 26,111,334,075.60
  5. Step 5: Solve for x
    x = 26,111,334,075.60/203,801.97
  6. Step 6: Final answer
    x = 128,121.10

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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.