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Finding the Fourth Proportional to 363,139.20, 544,708.80 and 269,827.20

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Solution

The fourth proportional to 363,139.20, 544,708.80 and 269,827.20 is: 404,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,139.20 : 544,708.80 = 269,827.20 : x
  2. Step 2: Convert to fraction form
    363,139.20/544,708.80 = 269,827.20/x
  3. Step 3: Cross multiply
    363,139.20x = 544,708.80 × 269,827.20
  4. Step 4: Simplify right side
    363,139.20x = 146,977,250,319.36
  5. Step 5: Solve for x
    x = 146,977,250,319.36/363,139.20
  6. Step 6: Final answer
    x = 404,740.80

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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.