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Finding the Fourth Proportional to 90,894.31, 125,400.22 and 90,753.98

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Solution

The fourth proportional to 90,894.31, 125,400.22 and 90,753.98 is: 125,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,894.31 : 125,400.22 = 90,753.98 : x
  2. Step 2: Convert to fraction form
    90,894.31/125,400.22 = 90,753.98/x
  3. Step 3: Cross multiply
    90,894.31x = 125,400.22 × 90,753.98
  4. Step 4: Simplify right side
    90,894.31x = 11,380,568,203.99
  5. Step 5: Solve for x
    x = 11,380,568,203.99/90,894.31
  6. Step 6: Final answer
    x = 125,206.61

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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.