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Finding the Fourth Proportional to 71,715.15, 107,575.01 and 21,795.69

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Solution

The fourth proportional to 71,715.15, 107,575.01 and 21,795.69 is: 32,694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,715.15 : 107,575.01 = 21,795.69 : x
  2. Step 2: Convert to fraction form
    71,715.15/107,575.01 = 21,795.69/x
  3. Step 3: Cross multiply
    71,715.15x = 107,575.01 × 21,795.69
  4. Step 4: Simplify right side
    71,715.15x = 2,344,671,460.73
  5. Step 5: Solve for x
    x = 2,344,671,460.73/71,715.15
  6. Step 6: Final answer
    x = 32,694.23

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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.