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Finding the Fourth Proportional to 71,793.46, 107,694.24 and 21,875.32

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Solution

The fourth proportional to 71,793.46, 107,694.24 and 21,875.32 is: 32,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,793.46 : 107,694.24 = 21,875.32 : x
  2. Step 2: Convert to fraction form
    71,793.46/107,694.24 = 21,875.32/x
  3. Step 3: Cross multiply
    71,793.46x = 107,694.24 × 21,875.32
  4. Step 4: Simplify right side
    71,793.46x = 2,355,845,962.16
  5. Step 5: Solve for x
    x = 2,355,845,962.16/71,793.46
  6. Step 6: Final answer
    x = 32,814.21

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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.