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Finding the Fourth Proportional to 63,912.20, 95,859.90 and 19,543.40

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Solution

The fourth proportional to 63,912.20, 95,859.90 and 19,543.40 is: 29,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,912.20 : 95,859.90 = 19,543.40 : x
  2. Step 2: Convert to fraction form
    63,912.20/95,859.90 = 19,543.40/x
  3. Step 3: Cross multiply
    63,912.20x = 95,859.90 × 19,543.40
  4. Step 4: Simplify right side
    63,912.20x = 1,873,428,369.66
  5. Step 5: Solve for x
    x = 1,873,428,369.66/63,912.20
  6. Step 6: Final answer
    x = 29,312.53

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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.