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Finding the Fourth Proportional to 66,544.95, 99,817.43 and 63,920.55

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Solution

The fourth proportional to 66,544.95, 99,817.43 and 63,920.55 is: 95,880.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,544.95 : 99,817.43 = 63,920.55 : x
  2. Step 2: Convert to fraction form
    66,544.95/99,817.43 = 63,920.55/x
  3. Step 3: Cross multiply
    66,544.95x = 99,817.43 × 63,920.55
  4. Step 4: Simplify right side
    66,544.95x = 6,380,384,705.58
  5. Step 5: Solve for x
    x = 6,380,384,705.58/66,544.95
  6. Step 6: Final answer
    x = 95,880.83

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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.