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Finding the Fourth Proportional to 40,896.60, 61,344.90 and 13,194.60

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Solution

The fourth proportional to 40,896.60, 61,344.90 and 13,194.60 is: 19,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,896.60 : 61,344.90 = 13,194.60 : x
  2. Step 2: Convert to fraction form
    40,896.60/61,344.90 = 13,194.60/x
  3. Step 3: Cross multiply
    40,896.60x = 61,344.90 × 13,194.60
  4. Step 4: Simplify right side
    40,896.60x = 809,421,417.54
  5. Step 5: Solve for x
    x = 809,421,417.54/40,896.60
  6. Step 6: Final answer
    x = 19,791.90

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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.