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Finding the Fourth Proportional to 63,851.88, 95,756.17 and 21,720.69

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Solution

The fourth proportional to 63,851.88, 95,756.17 and 21,720.69 is: 32,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,851.88 : 95,756.17 = 21,720.69 : x
  2. Step 2: Convert to fraction form
    63,851.88/95,756.17 = 21,720.69/x
  3. Step 3: Cross multiply
    63,851.88x = 95,756.17 × 21,720.69
  4. Step 4: Simplify right side
    63,851.88x = 2,079,890,084.16
  5. Step 5: Solve for x
    x = 2,079,890,084.16/63,851.88
  6. Step 6: Final answer
    x = 32,573.67

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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.