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Finding the Fourth Proportional to 181,921.92, 251,035.20 and 134,201.76

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Solution

The fourth proportional to 181,921.92, 251,035.20 and 134,201.76 is: 185,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,921.92 : 251,035.20 = 134,201.76 : x
  2. Step 2: Convert to fraction form
    181,921.92/251,035.20 = 134,201.76/x
  3. Step 3: Cross multiply
    181,921.92x = 251,035.20 × 134,201.76
  4. Step 4: Simplify right side
    181,921.92x = 33,689,365,661.95
  5. Step 5: Solve for x
    x = 33,689,365,661.95/181,921.92
  6. Step 6: Final answer
    x = 185,185.85

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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.