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Finding the Fourth Proportional to 325,375.40, 487,214.26 and 261,848.52

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Solution

The fourth proportional to 325,375.40, 487,214.26 and 261,848.52 is: 392,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,375.40 : 487,214.26 = 261,848.52 : x
  2. Step 2: Convert to fraction form
    325,375.40/487,214.26 = 261,848.52/x
  3. Step 3: Cross multiply
    325,375.40x = 487,214.26 × 261,848.52
  4. Step 4: Simplify right side
    325,375.40x = 127,576,332,249.27
  5. Step 5: Solve for x
    x = 127,576,332,249.27/325,375.40
  6. Step 6: Final answer
    x = 392,089.66

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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.