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Finding the Fourth Proportional to 263,507.52, 395,126.64 and 85,900.32

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Solution

The fourth proportional to 263,507.52, 395,126.64 and 85,900.32 is: 128,806.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,507.52 : 395,126.64 = 85,900.32 : x
  2. Step 2: Convert to fraction form
    263,507.52/395,126.64 = 85,900.32/x
  3. Step 3: Cross multiply
    263,507.52x = 395,126.64 × 85,900.32
  4. Step 4: Simplify right side
    263,507.52x = 33,941,504,816.52
  5. Step 5: Solve for x
    x = 33,941,504,816.52/263,507.52
  6. Step 6: Final answer
    x = 128,806.59

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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.