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Finding the Fourth Proportional to 60,940.28, 91,404.66 and 19,379.96

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Solution

The fourth proportional to 60,940.28, 91,404.66 and 19,379.96 is: 29,068.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,940.28 : 91,404.66 = 19,379.96 : x
  2. Step 2: Convert to fraction form
    60,940.28/91,404.66 = 19,379.96/x
  3. Step 3: Cross multiply
    60,940.28x = 91,404.66 × 19,379.96
  4. Step 4: Simplify right side
    60,940.28x = 1,771,418,654.61
  5. Step 5: Solve for x
    x = 1,771,418,654.61/60,940.28
  6. Step 6: Final answer
    x = 29,068.11

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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.