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Finding the Fourth Proportional to 203,536.40, 280,893.84 and 112,921.16

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Solution

The fourth proportional to 203,536.40, 280,893.84 and 112,921.16 is: 155,838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,536.40 : 280,893.84 = 112,921.16 : x
  2. Step 2: Convert to fraction form
    203,536.40/280,893.84 = 112,921.16/x
  3. Step 3: Cross multiply
    203,536.40x = 280,893.84 × 112,921.16
  4. Step 4: Simplify right side
    203,536.40x = 31,718,858,249.65
  5. Step 5: Solve for x
    x = 31,718,858,249.65/203,536.40
  6. Step 6: Final answer
    x = 155,838.75

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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.