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Finding the Fourth Proportional to 329,804.82, 455,132.34 and 186,561.79

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Solution

The fourth proportional to 329,804.82, 455,132.34 and 186,561.79 is: 257,456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,804.82 : 455,132.34 = 186,561.79 : x
  2. Step 2: Convert to fraction form
    329,804.82/455,132.34 = 186,561.79/x
  3. Step 3: Cross multiply
    329,804.82x = 455,132.34 × 186,561.79
  4. Step 4: Simplify right side
    329,804.82x = 84,910,304,606.20
  5. Step 5: Solve for x
    x = 84,910,304,606.20/329,804.82
  6. Step 6: Final answer
    x = 257,456.22

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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.