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Finding the Fourth Proportional to 72,375.68, 108,564.96 and 47,573.84

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Solution

The fourth proportional to 72,375.68, 108,564.96 and 47,573.84 is: 71,361.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,375.68 : 108,564.96 = 47,573.84 : x
  2. Step 2: Convert to fraction form
    72,375.68/108,564.96 = 47,573.84/x
  3. Step 3: Cross multiply
    72,375.68x = 108,564.96 × 47,573.84
  4. Step 4: Simplify right side
    72,375.68x = 5,164,852,036.65
  5. Step 5: Solve for x
    x = 5,164,852,036.65/72,375.68
  6. Step 6: Final answer
    x = 71,361.71

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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.