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Finding the Fourth Proportional to 66,618.23, 91,930.41 and 36,404.60

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Solution

The fourth proportional to 66,618.23, 91,930.41 and 36,404.60 is: 50,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.23 : 91,930.41 = 36,404.60 : x
  2. Step 2: Convert to fraction form
    66,618.23/91,930.41 = 36,404.60/x
  3. Step 3: Cross multiply
    66,618.23x = 91,930.41 × 36,404.60
  4. Step 4: Simplify right side
    66,618.23x = 3,346,689,344.23
  5. Step 5: Solve for x
    x = 3,346,689,344.23/66,618.23
  6. Step 6: Final answer
    x = 50,236.84

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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.