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Finding the Fourth Proportional to 439,489.44, 606,518.64 and 278,285.76

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Solution

The fourth proportional to 439,489.44, 606,518.64 and 278,285.76 is: 384,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,489.44 : 606,518.64 = 278,285.76 : x
  2. Step 2: Convert to fraction form
    439,489.44/606,518.64 = 278,285.76/x
  3. Step 3: Cross multiply
    439,489.44x = 606,518.64 × 278,285.76
  4. Step 4: Simplify right side
    439,489.44x = 168,785,500,686.57
  5. Step 5: Solve for x
    x = 168,785,500,686.57/439,489.44
  6. Step 6: Final answer
    x = 384,049.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.