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Finding the Fourth Proportional to 329,864, 455,212.44 and 186,620.96

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Solution

The fourth proportional to 329,864, 455,212.44 and 186,620.96 is: 257,536.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,864 : 455,212.44 = 186,620.96 : x
  2. Step 2: Convert to fraction form
    329,864/455,212.44 = 186,620.96/x
  3. Step 3: Cross multiply
    329,864x = 455,212.44 × 186,620.96
  4. Step 4: Simplify right side
    329,864x = 84,952,182,556.74
  5. Step 5: Solve for x
    x = 84,952,182,556.74/329,864
  6. Step 6: Final answer
    x = 257,536.99

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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.