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Finding the Fourth Proportional to 329,864.48, 455,213.04 and 186,621.56

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Solution

The fourth proportional to 329,864.48, 455,213.04 and 186,621.56 is: 257,537.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,864.48 : 455,213.04 = 186,621.56 : x
  2. Step 2: Convert to fraction form
    329,864.48/455,213.04 = 186,621.56/x
  3. Step 3: Cross multiply
    329,864.48x = 455,213.04 × 186,621.56
  4. Step 4: Simplify right side
    329,864.48x = 84,952,567,657.14
  5. Step 5: Solve for x
    x = 84,952,567,657.14/329,864.48
  6. Step 6: Final answer
    x = 257,537.79

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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.