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Finding the Fourth Proportional to 362,805.20, 544,207.80 and 126,069.20

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Solution

The fourth proportional to 362,805.20, 544,207.80 and 126,069.20 is: 189,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,805.20 : 544,207.80 = 126,069.20 : x
  2. Step 2: Convert to fraction form
    362,805.20/544,207.80 = 126,069.20/x
  3. Step 3: Cross multiply
    362,805.20x = 544,207.80 × 126,069.20
  4. Step 4: Simplify right side
    362,805.20x = 68,607,841,979.76
  5. Step 5: Solve for x
    x = 68,607,841,979.76/362,805.20
  6. Step 6: Final answer
    x = 189,103.80

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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.