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Finding the Fourth Proportional to 203,238.53, 280,452.69 and 112,598.31

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Solution

The fourth proportional to 203,238.53, 280,452.69 and 112,598.31 is: 155,376.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,238.53 : 280,452.69 = 112,598.31 : x
  2. Step 2: Convert to fraction form
    203,238.53/280,452.69 = 112,598.31/x
  3. Step 3: Cross multiply
    203,238.53x = 280,452.69 × 112,598.31
  4. Step 4: Simplify right side
    203,238.53x = 31,578,498,928.95
  5. Step 5: Solve for x
    x = 31,578,498,928.95/203,238.53
  6. Step 6: Final answer
    x = 155,376.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.