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Finding the Fourth Proportional to 369,993.91, 554,766.12 and 145,084.90

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Solution

The fourth proportional to 369,993.91, 554,766.12 and 145,084.90 is: 217,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,993.91 : 554,766.12 = 145,084.90 : x
  2. Step 2: Convert to fraction form
    369,993.91/554,766.12 = 145,084.90/x
  3. Step 3: Cross multiply
    369,993.91x = 554,766.12 × 145,084.90
  4. Step 4: Simplify right side
    369,993.91x = 80,488,187,043.59
  5. Step 5: Solve for x
    x = 80,488,187,043.59/369,993.91
  6. Step 6: Final answer
    x = 217,539.22

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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.