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Finding the Fourth Proportional to 263,389.76, 395,147.52 and 85,896.92

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Solution

The fourth proportional to 263,389.76, 395,147.52 and 85,896.92 is: 128,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,389.76 : 395,147.52 = 85,896.92 : x
  2. Step 2: Convert to fraction form
    263,389.76/395,147.52 = 85,896.92/x
  3. Step 3: Cross multiply
    263,389.76x = 395,147.52 × 85,896.92
  4. Step 4: Simplify right side
    263,389.76x = 33,941,954,913.64
  5. Step 5: Solve for x
    x = 33,941,954,913.64/263,389.76
  6. Step 6: Final answer
    x = 128,865.89

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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.