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Finding the Fourth Proportional to 66,938.62, 100,406.27 and 16,338.02

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Solution

The fourth proportional to 66,938.62, 100,406.27 and 16,338.02 is: 24,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,938.62 : 100,406.27 = 16,338.02 : x
  2. Step 2: Convert to fraction form
    66,938.62/100,406.27 = 16,338.02/x
  3. Step 3: Cross multiply
    66,938.62x = 100,406.27 × 16,338.02
  4. Step 4: Simplify right side
    66,938.62x = 1,640,439,063.66
  5. Step 5: Solve for x
    x = 1,640,439,063.66/66,938.62
  6. Step 6: Final answer
    x = 24,506.62

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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.