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Finding the Fourth Proportional to 66,197.81, 99,296.72 and 19,450.69

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Solution

The fourth proportional to 66,197.81, 99,296.72 and 19,450.69 is: 29,176.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,197.81 : 99,296.72 = 19,450.69 : x
  2. Step 2: Convert to fraction form
    66,197.81/99,296.72 = 19,450.69/x
  3. Step 3: Cross multiply
    66,197.81x = 99,296.72 × 19,450.69
  4. Step 4: Simplify right side
    66,197.81x = 1,931,389,446.18
  5. Step 5: Solve for x
    x = 1,931,389,446.18/66,197.81
  6. Step 6: Final answer
    x = 29,176.03

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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.