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Finding the Fourth Proportional to 66,093.55, 91,209.81 and 35,879.16

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Solution

The fourth proportional to 66,093.55, 91,209.81 and 35,879.16 is: 49,513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,093.55 : 91,209.81 = 35,879.16 : x
  2. Step 2: Convert to fraction form
    66,093.55/91,209.81 = 35,879.16/x
  3. Step 3: Cross multiply
    66,093.55x = 91,209.81 × 35,879.16
  4. Step 4: Simplify right side
    66,093.55x = 3,272,531,366.56
  5. Step 5: Solve for x
    x = 3,272,531,366.56/66,093.55
  6. Step 6: Final answer
    x = 49,513.63

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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.