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Finding the Fourth Proportional to 66,311.49, 91,511.82 and 36,098.82

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Solution

The fourth proportional to 66,311.49, 91,511.82 and 36,098.82 is: 49,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311.49 : 91,511.82 = 36,098.82 : x
  2. Step 2: Convert to fraction form
    66,311.49/91,511.82 = 36,098.82/x
  3. Step 3: Cross multiply
    66,311.49x = 91,511.82 × 36,098.82
  4. Step 4: Simplify right side
    66,311.49x = 3,303,468,718.05
  5. Step 5: Solve for x
    x = 3,303,468,718.05/66,311.49
  6. Step 6: Final answer
    x = 49,817.44

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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.