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Finding the Fourth Proportional to 66,382.42, 91,607.70 and 36,574.42

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Solution

The fourth proportional to 66,382.42, 91,607.70 and 36,574.42 is: 50,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,382.42 : 91,607.70 = 36,574.42 : x
  2. Step 2: Convert to fraction form
    66,382.42/91,607.70 = 36,574.42/x
  3. Step 3: Cross multiply
    66,382.42x = 91,607.70 × 36,574.42
  4. Step 4: Simplify right side
    66,382.42x = 3,350,498,495.03
  5. Step 5: Solve for x
    x = 3,350,498,495.03/66,382.42
  6. Step 6: Final answer
    x = 50,472.68

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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.