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Finding the Fourth Proportional to 353,540.44, 487,746.39 and 261,883

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Solution

The fourth proportional to 353,540.44, 487,746.39 and 261,883 is: 361,295.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,540.44 : 487,746.39 = 261,883 : x
  2. Step 2: Convert to fraction form
    353,540.44/487,746.39 = 261,883/x
  3. Step 3: Cross multiply
    353,540.44x = 487,746.39 × 261,883
  4. Step 4: Simplify right side
    353,540.44x = 127,732,487,852.37
  5. Step 5: Solve for x
    x = 127,732,487,852.37/353,540.44
  6. Step 6: Final answer
    x = 361,295.27

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1.5x scale

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.