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Finding the Fourth Proportional to 66,491.24, 91,758.44 and 36,276.80

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Solution

The fourth proportional to 66,491.24, 91,758.44 and 36,276.80 is: 50,062.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.24 : 91,758.44 = 36,276.80 : x
  2. Step 2: Convert to fraction form
    66,491.24/91,758.44 = 36,276.80/x
  3. Step 3: Cross multiply
    66,491.24x = 91,758.44 × 36,276.80
  4. Step 4: Simplify right side
    66,491.24x = 3,328,702,576.19
  5. Step 5: Solve for x
    x = 3,328,702,576.19/66,491.24
  6. Step 6: Final answer
    x = 50,062.27

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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.