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Finding the Fourth Proportional to 384,499.40, 576,792.30 and 118,257.80

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Solution

The fourth proportional to 384,499.40, 576,792.30 and 118,257.80 is: 177,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,499.40 : 576,792.30 = 118,257.80 : x
  2. Step 2: Convert to fraction form
    384,499.40/576,792.30 = 118,257.80/x
  3. Step 3: Cross multiply
    384,499.40x = 576,792.30 × 118,257.80
  4. Step 4: Simplify right side
    384,499.40x = 68,210,188,454.94
  5. Step 5: Solve for x
    x = 68,210,188,454.94/384,499.40
  6. Step 6: Final answer
    x = 177,399.99

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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.