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Finding the Fourth Proportional to 90,873.90, 125,407.14 and 50,042.82

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Solution

The fourth proportional to 90,873.90, 125,407.14 and 50,042.82 is: 69,059.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.90 : 125,407.14 = 50,042.82 : x
  2. Step 2: Convert to fraction form
    90,873.90/125,407.14 = 50,042.82/x
  3. Step 3: Cross multiply
    90,873.90x = 125,407.14 × 50,042.82
  4. Step 4: Simplify right side
    90,873.90x = 6,275,726,933.73
  5. Step 5: Solve for x
    x = 6,275,726,933.73/90,873.90
  6. Step 6: Final answer
    x = 69,059.73

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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.