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Finding the Fourth Proportional to 19,394.99, 29,091.92 and 5,355.88

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Solution

The fourth proportional to 19,394.99, 29,091.92 and 5,355.88 is: 8,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,394.99 : 29,091.92 = 5,355.88 : x
  2. Step 2: Convert to fraction form
    19,394.99/29,091.92 = 5,355.88/x
  3. Step 3: Cross multiply
    19,394.99x = 29,091.92 × 5,355.88
  4. Step 4: Simplify right side
    19,394.99x = 155,812,829.86
  5. Step 5: Solve for x
    x = 155,812,829.86/19,394.99
  6. Step 6: Final answer
    x = 8,033.66

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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.