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Finding the Fourth Proportional to 66,147.31, 91,283.38 and 35,932.64

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Solution

The fourth proportional to 66,147.31, 91,283.38 and 35,932.64 is: 49,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,147.31 : 91,283.38 = 35,932.64 : x
  2. Step 2: Convert to fraction form
    66,147.31/91,283.38 = 35,932.64/x
  3. Step 3: Cross multiply
    66,147.31x = 91,283.38 × 35,932.64
  4. Step 4: Simplify right side
    66,147.31x = 3,280,052,375.11
  5. Step 5: Solve for x
    x = 3,280,052,375.11/66,147.31
  6. Step 6: Final answer
    x = 49,587.09

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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.