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Finding the Fourth Proportional to 362,486.80, 543,730.20 and 125,853.40

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Solution

The fourth proportional to 362,486.80, 543,730.20 and 125,853.40 is: 188,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,486.80 : 543,730.20 = 125,853.40 : x
  2. Step 2: Convert to fraction form
    362,486.80/543,730.20 = 125,853.40/x
  3. Step 3: Cross multiply
    362,486.80x = 543,730.20 × 125,853.40
  4. Step 4: Simplify right side
    362,486.80x = 68,430,294,352.68
  5. Step 5: Solve for x
    x = 68,430,294,352.68/362,486.80
  6. Step 6: Final answer
    x = 188,780.10

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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.