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Finding the Fourth Proportional to 362,542.80, 543,814.20 and 125,909.40

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Solution

The fourth proportional to 362,542.80, 543,814.20 and 125,909.40 is: 188,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,542.80 : 543,814.20 = 125,909.40 : x
  2. Step 2: Convert to fraction form
    362,542.80/543,814.20 = 125,909.40/x
  3. Step 3: Cross multiply
    362,542.80x = 543,814.20 × 125,909.40
  4. Step 4: Simplify right side
    362,542.80x = 68,471,319,633.48
  5. Step 5: Solve for x
    x = 68,471,319,633.48/362,542.80
  6. Step 6: Final answer
    x = 188,864.10

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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.