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Finding the Fourth Proportional to 90,965.16, 136,452.78 and 27,794.88

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Solution

The fourth proportional to 90,965.16, 136,452.78 and 27,794.88 is: 41,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,965.16 : 136,452.78 = 27,794.88 : x
  2. Step 2: Convert to fraction form
    90,965.16/136,452.78 = 27,794.88/x
  3. Step 3: Cross multiply
    90,965.16x = 136,452.78 × 27,794.88
  4. Step 4: Simplify right side
    90,965.16x = 3,792,688,645.77
  5. Step 5: Solve for x
    x = 3,792,688,645.77/90,965.16
  6. Step 6: Final answer
    x = 41,693.86

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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.