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Finding the Fourth Proportional to 203,568.59, 280,926.21 and 111,687.26

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Solution

The fourth proportional to 203,568.59, 280,926.21 and 111,687.26 is: 154,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,568.59 : 280,926.21 = 111,687.26 : x
  2. Step 2: Convert to fraction form
    203,568.59/280,926.21 = 111,687.26/x
  3. Step 3: Cross multiply
    203,568.59x = 280,926.21 × 111,687.26
  4. Step 4: Simplify right side
    203,568.59x = 31,375,878,657.08
  5. Step 5: Solve for x
    x = 31,375,878,657.08/203,568.59
  6. Step 6: Final answer
    x = 154,129.27

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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.