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Finding the Fourth Proportional to 185,633.73, 278,405.94 and 85,697.97

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Solution

The fourth proportional to 185,633.73, 278,405.94 and 85,697.97 is: 128,526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,633.73 : 278,405.94 = 85,697.97 : x
  2. Step 2: Convert to fraction form
    185,633.73/278,405.94 = 85,697.97/x
  3. Step 3: Cross multiply
    185,633.73x = 278,405.94 × 85,697.97
  4. Step 4: Simplify right side
    185,633.73x = 23,858,823,893.94
  5. Step 5: Solve for x
    x = 23,858,823,893.94/185,633.73
  6. Step 6: Final answer
    x = 128,526.34

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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.