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Finding the Fourth Proportional to 71,515.41, 107,273.89 and 21,595.94

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Solution

The fourth proportional to 71,515.41, 107,273.89 and 21,595.94 is: 32,394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,515.41 : 107,273.89 = 21,595.94 : x
  2. Step 2: Convert to fraction form
    71,515.41/107,273.89 = 21,595.94/x
  3. Step 3: Cross multiply
    71,515.41x = 107,273.89 × 21,595.94
  4. Step 4: Simplify right side
    71,515.41x = 2,316,680,610.69
  5. Step 5: Solve for x
    x = 2,316,680,610.69/71,515.41
  6. Step 6: Final answer
    x = 32,394.14

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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.