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Finding the Fourth Proportional to 362,004.80, 543,007.20 and 165,012.80

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Solution

The fourth proportional to 362,004.80, 543,007.20 and 165,012.80 is: 247,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,004.80 : 543,007.20 = 165,012.80 : x
  2. Step 2: Convert to fraction form
    362,004.80/543,007.20 = 165,012.80/x
  3. Step 3: Cross multiply
    362,004.80x = 543,007.20 × 165,012.80
  4. Step 4: Simplify right side
    362,004.80x = 89,603,138,492.16
  5. Step 5: Solve for x
    x = 89,603,138,492.16/362,004.80
  6. Step 6: Final answer
    x = 247,519.20

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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.